Linked Questions

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0answers
300 views

Why isn't an Acid-base titration curve linear? [duplicate]

Sorry if this is a stupid question, but why is a acid-base titration curve not linear? As you add more acid solution to a basic solution, shouldn't the pH of the basic solution slowly go up in ...
2
votes
0answers
33 views

Titration curve of strong acid with strong base [duplicate]

I have a question regarding the titration curve for $\ce{HCl}$ titrated with $\ce{NaOH}$. Why does it look like it does, with a steep slope near the equivalence point and a flat slope at the beginning ...
5
votes
2answers
21k views

Determine the pH of mixture of two weak acids

We’ve two solutions : Solution 1 $\ce{HCOOH}$ its concentration is $c_1=10^{-2}\ \mathrm{mol/l}$ and its volume is $v_1 = 50\ \mathrm{ml}$ and its $\mathrm{pH}_1 = 2.9$ Solution 2 $\ce{CH_3COOH}$ ...
7
votes
3answers
3k views

Is the Henderson–Hasselbalch equation volume independent?

Looking at this equation $\mathrm{pH} = \mathrm{p}K_\text{a} +\log\frac{[\ce{CB}]}{[\ce{A}]}$ makes me think that it is concentration independent. What I mean is, when we look at $\frac{[\ce{CB}]}{[\...
6
votes
2answers
7k views

What is causing the buffer region in a weak acid - strong base titration?

For the buffer region in this, why does it stop the pH from increasing? At the start: $$\ce{CH3COOH + NaOH -> CH3COONa + H2O}$$ Which means there will be a high amount of salt in the solution, ...
12
votes
1answer
1k views

How to analyze a acid and salt mixture using titrimetry?

Given a mixture of $\ce{HCl}$ and $\ce{MCl3}$ and the following dissociation constants for $\ce{M(OH)3}$, how can the concentrations of $\ce{HCl}$ and $\ce{MCl3}$ be determined separately by titrating ...
4
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1answer
1k views

Why is the vertical part of a titration curve longer for a strong acid by a strong base than for a weak?

As the title says, I would like to understand chemically why this occurs. My theory behind it is that in the former case both are completely dissociated, and so at the equivalence point (and ...
3
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1answer
345 views

pH Curves for Titrations

Why does the pH rapidly increase near the equivalence point during--why does the slope of the graph of a pH curve sharply increase around this area?
0
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1answer
348 views

pH Curves- Anomalies

In class, the other day, we were discussing pH curves. Assume that I have HCl and NaOH of concentration 1 mol/mL. Now, consider that I have 50mL of HCl, and begin adding small quantities of NaOH. I ...
0
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1answer
173 views

pH Curve in Acid/Base Titrations

So I came across a question on the equation of the pH curve, and I wanted to know how the user here arrived at the matter balance equation. Any help would be appreciated! Here is the question: The ...
1
vote
1answer
70 views

Need clarification on pH titrimetry .

I found somewhere in this site that question The reason behind the steep rise in pH in the acid base titration curve when I tried to follow accepted answer, at some point I got stuck. Answer says, ...