Questions tagged [titration]

A laboratory method to determine the concentration of an analyte in solution. The solution volume plays a key role in the analysis.

Filter by
Sorted by
Tagged with
-3 votes
0 answers
21 views

Iodimetric titration for reducing agent

I am stuck at point, where I want to find the % Purity of my analyte with iodimetric titration as the analyte is very strong reducing agent. I found reference which mentions titration with iodine in ...
Manjiri Jadhav's user avatar
-2 votes
0 answers
32 views

Titration of HCl with NaOH [closed]

What volume of HCl of 0.2 M is required to neutralize a 10 cm³ of 0.02 M NaOH? Can this titration be performed at a lab? I have calculated the volume of HCl as 1 cm³, but my chemistry teacher is ...
moonchild's user avatar
-4 votes
1 answer
37 views

Determination of Calcium from a mixture of calcium and magnesium using Back Titration [closed]

I've some confusions in the experiment. Step 7 gives us the concentration of both calcium and magnesium (Ca+Mg combined), right? How do we find the concentration of magnesium only from back titration ...
Bilal Malik's user avatar
2 votes
0 answers
48 views

How can I refine my method of determining iron content in spinach?

I have begun a chemistry experiment that attempts to determine how iron content in spinach is affected by the length of time it is cooked. Through research, I learned that iron content is often ...
beebs's user avatar
  • 21
-2 votes
3 answers
239 views

Why are buffer solutions not neutral

I am very confused about buffer solutions and I have lots of ideas about them which don’t integrate together so I really can’t tell which are correct and which are wrong. That being the case it’s ...
QuantumHamster's user avatar
1 vote
1 answer
57 views

Determination of the composition of the mixture based on acid-base titration

The solution can contain $\ce{HCl}$, $\ce{H3PO4}$ or $\ce{NaH2PO4}$ individually or in all possible combinations. An aliquot of $25.00\,\text{mL}$ of this solution consumes $14.56\,\text{mL}$ of $0....
crvenikupus's user avatar
3 votes
1 answer
150 views

How and when do redox indicators work?

In redox titrations, for example cerimetry, cerium(IV) is reduced to cerium(III) with a reducing analyte. The Ce(IV)/Ce(III) redox potential is around $\pu{1.76 V}$. We keep track of the solutions' ...
Mäßige's user avatar
  • 117
0 votes
1 answer
33 views

How to determine the dynamic of progression of two simultaneous precipitation (double replacement) reactions? [duplicate]

We have a solution of mineral water with potassium chromate added to it, and want to titrate the chloride ions in the mineral water. We were told to use silver nitrate for this, which would produce ...
Abdelhadi Bouziani's user avatar
3 votes
1 answer
150 views

Role of MnSO4 in permanganometric titration

This might sound like a stupid question, but I have been unable to wrap my head around it. Recently in a lab I had to titrate H2C2O4 with KMnO4 in acidic medium (H2SO4). However, in the work, it ...
confusionfromarizona's user avatar
0 votes
1 answer
108 views

Determining the concentration of ammonium nitrate by chemical means

I have several litres of ammonium nitrate solution that I do not know the concentration of, but is approximately 0.6M. I don't have precise enough instruments to determine it via its density. I ...
Rafael's user avatar
  • 249
0 votes
2 answers
83 views

I need help for my chloride titration

I'm a 14-year-old student embarking on my first chemistry assignment. My teacher has tasked me with conducting a chloride titration of drinking water. There's just one condition: I must avoid using ...
Ben Kirk's user avatar
0 votes
0 answers
128 views

What is the effect of temperature on titration between Iron(II) sulfate and potassium permanganate

I'm conducting an experiment in school, the titration of Iron(II) sulfate dissolved in H2SO4 against potassium permanganate. In this, I am varying the temperature that the analyte is heated to and ...
Lilith Labans's user avatar
1 vote
1 answer
137 views

Does dilution of titrant gives a more accurate result?

When I see demonstrations of titration of acid solutions of unknown concentration with phenolphthalein as the indicator, when the last drop of NaOH went in the analyte solution became permanently pink....
sfbk's user avatar
  • 49
7 votes
6 answers
1k views

Best regression model for a sigmoidal pattern

Students submit the data for an acid–base titration to my app. The abscissa axis corresponds to the volume. Along the ordinate axis are the pH values. The curve I’m looking for must work automatically ...
krirkrirk's user avatar
  • 187
3 votes
0 answers
45 views

Titration of butyllithium methodology

I am a physical chemist with limited experience in organic work. I am going to be using butyllithium for insertion of lithium into a metal oxide structure (Cava, Solid State Ionics, 1983). One goal is ...
XenonB's user avatar
  • 41
0 votes
0 answers
31 views

When adding a weak acid to a strong base in an acid-base titration, why does multiplying the pKa of the acid by two give the pH at neutralisation?

I'm not sure if the premise of the question is even correct, but when adding ethanoic acid to sodium hydroxide solution, I was told that the pH at the point of neutralisation should be around 2x the ...
user134743's user avatar
1 vote
0 answers
353 views

Determine the pKa of a diprotic acid by titration (if pKa1 is similar to pKa2)

Determining the acidity constants of a diprotic acid (in my case, tartaric acid) by titration with NaOH and pH-meter is not possible if pKa2 - pKa1 < 2. This is because there are no "pH jumps&...
Stefano's user avatar
  • 109
5 votes
1 answer
847 views

How to proceed with iodometric titration to determine caffeine concentration in liquid coffee?

Context I'm a high school student who decided to investigate the relationship between caffeine concentration and brewing temperature of coffee out of their love for the substance. For my method, I ...
qanpi's user avatar
  • 59
2 votes
3 answers
417 views

What is alkalimetry?

I've found two answers. One says its the determination of concentration of unknown alkali solution with the help of standard acid solution. The other says it as the determination of concentration of ...
heisenberg's user avatar
-1 votes
2 answers
152 views

Number of significant figures to use in reporting the concentration of the titrand in acid-base titration [closed]

If you perform an acid-base titration yourself, how do you determine the number of significant figures to use when reporting on the concentration of the titrand? Assume you perform seven titration ...
UserE's user avatar
  • 45
1 vote
0 answers
260 views

Calculating error in acid-base titration

You perform a titration of an acid (let's say $\pu{20 ml}$ $\ce{CH_3COOH}$) with a base (let's say $\pu{0.5 M}$ $\ce{NaOH}$). The burette is marked at $\pu{0.10 ml}$ intervals. From what I read in a ...
UserE's user avatar
  • 45
1 vote
1 answer
73 views

What has caused a plateau in the lead up to the equivalence point of a conductometric titration?

In a titration of HCl against NH3OH, conductivity had increased in a linear fashion (think y=x), and before it approached the equivalence point, there was approximately 0.8mL of 'plateau'. Before ...
ja10's user avatar
  • 19
1 vote
2 answers
562 views

Calculate the pH at the equilibrium point in an acetic acid sodium hydroxide titration

You perform a titration of $\ce{CH3COOH}$ with $\ce{NaOH}$. Let the original concentration of acetic acid be $\pu{0.2 M}$. The volumes of $\ce{CH3COOH}$ and $\ce{NaOH}$ are the same. Then the ...
UserE's user avatar
  • 45
2 votes
1 answer
234 views

Procedure for Determining Lead Levels in Water

I enjoyed chemistry in college and have always wanted an excuse to try it at home. A relative is currently very worried about lead from various sources. I think this is a great excuse to get back into ...
Kyle Berezin's user avatar
0 votes
1 answer
1k views

What does indicator "colour change" mean at equivalence and end point during titration

I've been trying to learn about indicators and titrations, but I keep on getting stuck on what "colour change" means in relation to the equivalence and endpoint, and I feel like I'm reading ...
Discoduckosaurus 's user avatar
3 votes
0 answers
71 views

Measuring [A-]/[HA-] with Buffer and Indicator

I'm very confused on how to calculate the [A-]/[HA] value, given the fact that my dilution series uses buffers at various pH values with the same indicator (supplied at the same concentration to each ...
Tyler Anderson's user avatar
-2 votes
1 answer
110 views

UV absorbance titration to determine binding stoichiometry

I previously posted a question but I think I did not explain correctly. I want to construct a Job plot using UV-Vis titration to find binding stoichiometry. I have 20uM of ligand solution and 20uM of ...
dojodna's user avatar
  • 11
3 votes
2 answers
2k views

Calculate the titer of a solution

I hope this is the right place to ask. We have this exercise without solution One litre of diluted sodium hydroxide solution (c = 0.15mol/litre) is to be prepared in the laboratory. The titer from ...
wengen's user avatar
  • 257
-5 votes
1 answer
146 views

Functional group for glycine that had being titrated (i) HCl (ii)NaOH

i am kinda confused with this question. They asked for the functional group of (i) glycine hydrochloride (ii) glycine that titrated with NaOH. I did take a look many times especially for glycine ...
Nku's user avatar
  • 1
-4 votes
1 answer
104 views

Usage of acid in redox titration [closed]

I've came to know, diluted H2SO4 is used as medium in KMnO4 titration. Whereas, HNO3 is not used as it is an oxidizing agent. My question is H2SO4 is also an oxidizing agent. Then what's the problem ...
Swapnil MZS's user avatar
-1 votes
2 answers
650 views

Why concurrent reading instead of mean in titration? [closed]

While doing titration we take concurrent reading like. Reading..........Concurrent reading 3.6 3.4=====> 3.4 3.4 Why don't we take the mean value as we do in physics?
Poudel89's user avatar
-1 votes
1 answer
198 views

Question about Mohr's Method procedure

Just had a quick question on Mohr's method. In my analytical chemistry course we are finding the concentration of chlorine among several samples. The first step is to add a small amount of silver ...
Don Tunes's user avatar
0 votes
1 answer
159 views

What happens when you mix a salt with a strong base? [duplicate]

This doesn't come off from a question but it came to my mind. Take an example of $NH_4Cl$ as the salt and $NaOH$ as the strong base. What would happen to the pH for example? I'm guessing that the salt ...
Adrian's user avatar
  • 39
1 vote
1 answer
182 views

How to balance iodometric equations using ion electron method? [duplicate]

I found out the reductant, oxidant, oxidation half reaction, reduction half reaction; balanced ions (adding $\ce{H2O},$ $\ce{H+},$ electrons) and charges: $$\ce{K\overset{-1}{I} + \overset{+2}{Cu}SO4 -...
dandelionseeds's user avatar
-1 votes
1 answer
108 views

Why phenolphthalein is not completely neutralized in basic solutions? [closed]

Phenolphthalein $(\ce{HIn})$ is slightly acidic. Why doesn't it completely break down into $\ce{H+}$ and $\ce{In-}$ and also reacting with all of the $\ce{OH-}$ ion present, unlike $\ce{NaOH}$ and $\...
dandelionseeds's user avatar
2 votes
0 answers
31 views

Where do lactone groups occur in graphene oxides and how are they identified using FTIR measurements?

Usually, the literature (for example, Serodre et al. [1]) shows the occurrence of lactones in graphene oxides through potentiometric titration measurements. In the nanosheets, do these groups occur in ...
Nathan Vinicius's user avatar
0 votes
2 answers
847 views

How to determine the concentration of citric acid in a carbonated drink

How to determine the concentration of citric acid in a carbonated drink? Does it make sense to use titration if the soda is heavily colored? Or is it possible to get citric acid salt somehow?
Маркел's user avatar
2 votes
2 answers
583 views

How would I go about determining the concentration of ammonia in Windex Original Glass Cleaner, post titration?

so as seen in the table below, we did our 4 titres plus 1 sighter with Hydrochloric Acid (HCl) (.1M) successfully as the Windex solution with 3 drops of methyl-orange already in, (our indicator) ...
Roger's user avatar
  • 29
0 votes
1 answer
1k views

A method to create NH3-NH4Cl buffer solution using titration method

My aim is to create a basic buffer solution. I know that to create a basic buffer solution, we need a strong acid and weak base. In my case I have chosen $\ce{NH3}$ and $\ce{NH4Cl}$. Using titration, ...
Partth Kulkarni's user avatar
0 votes
0 answers
188 views

How does temperature affect ionic Ca in milk

I’m doing an investigation on the effects of temperature on ionic calcium content in milk through a classic EDTA titration method and have a few questions: — what is the scientific theory behind the ...
user126547's user avatar
4 votes
1 answer
171 views

Would this redox titration be possible as a direct titration rather than a pseudo-back titration?

In a general chemistry lab protocol (green chemistry, ISBN-13: 978-1482230208), students determine the content of ascorbic acid in a vitamin C tablet. There is an ascorbic acid standard in a buret, ...
Karsten's user avatar
  • 40.3k
0 votes
0 answers
53 views

Titration of a weak acid with a strong base

I recently learned that when titrating a strong base like NaOH into a weak acid, like Acetic Acid, a buffer region/zone develops and can be illustrated as follows: CH₃COOH + OH⁻→ CH₃COO⁻ + H₂O I've ...
user126111's user avatar
0 votes
1 answer
67 views

Equivalence point in relation with law of equivalence

Why is that we apply law of equivalence only at equivalence point during a titration. Isn't the law valid always? In the sense, cant we use law equivalence even before we reach the equivalence point?
Mkose's user avatar
  • 21
2 votes
1 answer
95 views

Are carboxylic anhydrides in graphene oxides considered adsorption sites for metals? If so, are they more or less reactive than carboxylic acids?

The literature abundantly addresses the fact that carboxylic acids present in graphene oxides act as efficient adsorption sites for metals in aqueous solutions (e.g., HE et al., 2021; ZHAO et al., ...
Nathan Vinicius's user avatar
0 votes
1 answer
2k views

What is the burette solution called in a titration, when its concentration is unknown?

Generally in titration, the unknown solution is in the conical flask, called the analyte; the standard solution is in the burette, called the titrant. How do the terminologies change when one swaps ...
joshua mason's user avatar
2 votes
2 answers
339 views

Conductometric titration curve plotting

In the conductometric titation of HCl vs NaOH, the conductance initially decreases, reaches a minimum at equivalence point, and then the slope of the curve becomes positive: Source: https://chart-...
Shub's user avatar
  • 408
3 votes
0 answers
114 views

Can shop-bought caustic soda be used to measure titratable acidity of wines?

When making wines, it's occasionally necessary to measure the wine's 'titratable acidity' (TA). To do this, a 0.1N solution of NaOH is titrated with a wine sample. 0.1N NaOH solution can be purchased, ...
CaptainProg's user avatar
1 vote
0 answers
50 views

Methods to detect iron in highly concentrated ferric sulphate solutions

I’m writing with a query related to reagents used to detect iron in highly concentrated ferric sulphate solutions. I am currently exploring iron detection in both solutions of ferrous $\ce{(Fe^2+)}$ ...
Nicholas's user avatar
1 vote
0 answers
406 views

How useful is thymol blue (acid) as an indicator?

The pH range of thymol blue (acid) is 1.2-2.8.. This pH range seems pretty useless. Generally, the sudden change in pH for SA-SB titration occurs in the range of 4-10; the sudden change in pH for SA-...
tryingtobeastoic's user avatar
-3 votes
1 answer
82 views

Determining iron(III) content in mixture of iron(II) and iron(III) [closed]

Problem Outline a plan of an experiment to determine the percentage of iron present as iron(III) in a solution containing $\ce{Fe^3+(aq)}$ and $\ce{Fe^2+(aq)}$ ions. You are provided with zinc, a ...
Adam's user avatar
  • 15

1
2 3 4 5
11