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What happens when ferric chloride is dissolved in water?

Ferric chloride can be prepared by dissolving hematite in hydrochloric acid: $$\ce{Fe2O3 + 6HCl -> 2FeCl3 + 3H2O }\tag{1}$$ But the resulting ferric chloride will be exposed from its formation to ...
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0answers
5 views

Which of them shows correct direction of I effect

I am confused in option (iii) how do we decide the direction of I effect?
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0answers
6 views

What does ethylene glycol decompose to when exposed to air for an extended period of time?

I came across this article on wikipedia on ethylene glycol stating that it decomposes fairly quickly. I was under the impression that ethylene glycol was dangerous to let leach into soil, but I think ...
-2
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1answer
12 views

What is the use of both mol and mass representing the same thing i.e. amount of something?

A mol is a unit but also has a magnitude. How can a unit have a magnitude? And if mole is used to measure an amount of substance than what does mass measure?
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1answer
20 views

Chromium cyanide complexes

I have rarely seen any chromium $(\ce{Cr})$ square planar complexes and I have been told that $\ce{[Cr(CN)4]-}$ is tetrahedral. So, if the statement is actually correct, are there any other known ...
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0answers
20 views

Chemistry question [on hold]

For the following reaction, 16.1 grams of nitrogen monoxide are allowed to react with 6.27 grams of oxygen gas . 2 NO(g) + O2(g) 2 NO2(g) What is the FORMULA for the limiting reagent? What is the ...
1
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1answer
53 views

n-Factor of P4O6

I had a question in my exam: Which of the following can be the $n$-factor of $\ce{P4O6}?$ A. 8 B. 9 C. 10 D. 12 I went for options A and B as in cold water $1$ mole of $\ce{P4O6}$ on ...
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0answers
23 views

reaction of amides with br2 /NaOH

should the reaction be replacement of D2 with H?
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0answers
29 views

Does the volume change when the reactions occur?

I have this reaction (all substances are gaseous): $$ \begin{align} \ce{A + 4.5 B &→ C + 2 D + 2 E}\tag{R1}\\ \ce{C + 7.5 B &→ 8 D + 2 E}\tag{R2} \end{align} $$ Does the volume change when ...
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0answers
27 views

Why do the NMR peaks shift when H+ concentration and temperature are varied on the reversible hydrolysis of pyruvic acid to 2,2-dihydroxypropionate?

We performed two experiments. Each of the peaks are referring to the methyl peaks in both reactant and product of the hydrolysis reaction. We varied $\ce{H+}$ concentration of the reaction and the ...
2
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1answer
30 views

What should be the name of the given compound?

Following compound is named as (1) 6-Mercaptocyclohex-4-ene-1,3-diol (2) 1-Mercaptocyclohex-2-ene-4,6-diol (3) 1-Mercaptocyclohex-5-ene-2,4-diol (4) 4-Mercaptocyclohex-2-ene-1,5-diol ...
3
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1answer
36 views

What is the IUPAC name of the given compound?

IUPAC name of the given compound is (1) 3-Hydroxycyclohex-4-en-1-one (2) 5-Hydroxycyclohex-3-enone (3) 5-Ketocyclohex-2-enol (4) 3-Ketocyclohex-5-enol By what I understand by ...
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0answers
18 views

Organic Chemistry Extra Credit [on hold]

This page of my extra credit were difficult for me to figure out. I completed number 17 but I am unsure if I got it correct
3
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1answer
132 views

What does “parallel in-register” mean for a protein structure in a fibril?

I read a paper by Ross and Poirier [1, p. S12] which has the following lines (see section Commonalities of amyloid structure) that describe the structure of protein in a fibril: The most ...
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0answers
14 views

Why does eutectic point has three phases, but consolute point has two phases?

At eutectic point, there are three phases: solid A, solid B and homogenous liquid phase containing both A and B. But at consolute point, we are told it has 2 phases: liquid A and liquid B. Why isn'...
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0answers
27 views

Organic Chemistry Extra Credit Questions [on hold]

I am confused on these four questions from my extra credit questions.
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1answer
38 views

Is it possible to prepare a 0.1 N solution of HCl and methanol?

In my lab guide I read: "Use a $\pu{0.1 N}$ solution of methanol-chloridic acid $(9:1)$ for the anthocyanin extraction", so I tried to calculate the volume of $\ce{CH3OH}$ and $\ce{HCl}$ to prepare it,...
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0answers
15 views

looking for reference sources to avoid unwanted reactions during synthesis [on hold]

Where does one go to find out what functional groups a certain reaction type will interact with in addition to the target functional group? I treid some organic chemistry websites but should I turn to ...
5
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1answer
157 views

Volatile alkali metal compounds

Most elements are or have compounds that are gases or have a significant vapor pressure at room temperature. Fluoride is a powerful tool for producing highly oxidized covalent and volatile compounds. ...
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0answers
28 views

Smoking rotten potato [on hold]

I cut up a potato in my tobacco to make it moist. Accidently removed all but one piece. Weeks later I found mold in my tobacco which I have been smoking. I became sick with tiredness and dizziness for ...
-2
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0answers
25 views

dissolving powder [on hold]

I have small amount of rosemary herb powder mixed in a cup of water and it's only party dissolving. I was wondering if there is another powder that can be added to this water solution and dissolve the ...
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0answers
24 views

How do I separate a graphene/graphite oxide and NaOH solution without centrifugation? (filtration didn't work)

The graphene oxide solution was made from electrolytic exfoliation of graphite electrodes in a 10M NaOH solution. Some graphene powder deposited on the bottom of the recipient but a brownish solution ...
-7
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1answer
21 views

Quality of Pond Water [on hold]

I like to drink raw unfiltered pond straight without any filtration and I haven’t ever gotten sick. I strong believe and know in my heart that pond water and any water in nature is clean water and ...
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1answer
26 views

Why is the cathode of a lithium-ion battery metallic, which is the opposite of most other batteries?

In most types of batteries, primary and secondary, the metallic electrode is the anode, and a non-metal acts as cathode. Or a pure metal is the anode, and the cathode is a metal oxide. Why is the ...
3
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1answer
91 views

Are these numbers Madelung constants?

I have no idea of chemistry, just a little bit what I know from school, but I found through some search some connection between entropy (Shannon entropy) of the divisors of some natural numbers and ...
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2answers
31 views

Redox couple notation

How is the redox couple as it is written for the oxidation of MnO4-, as MnO4-,H+/Mn2+,H2O correct? I agree that MnO4 is being oxidized as it loses electrons (going from -1 charge to +2) but I dont ...
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1answer
24 views

Perturbation Theory in Orbital Interactions in Chemistry

In the entire book, perturbation theory is used as a qualitative tool to rationalise some chemical phenomena. The authors write that $$\psi_i = \sum_\mu{T_{ji}\psi_j^\circ}\tag{1}$$ The proof of the ...
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0answers
23 views

Can compounds dissolved in different miscible solvents react?

For example, can crystal iodine dissolved in ethanol react with sodium thiosulfate dissolved in water when mixed together?
-2
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1answer
28 views

NH4+ reaction with NaOH [on hold]

Why does $NH4^+$ react with NaOH to give $NH_3+H_2O$ and not $NH_4OH$
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0answers
39 views

What books provide short, but complete school chemistry course? [on hold]

I am graduate physics student. I want some book that could refresh my knowledge of school chemistry.
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1answer
23 views

What does higher electron gain enthalpy mean here?

While talking about ionic bonds my book states : Higher the value of electron gain enthalpy of the atom, greater the ease of formation of the anion from it, i.e., other atom should have high value ...
-1
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0answers
33 views

Can the O=I bond in IOF5 instead be an O-I bond?

The common structure of IOF5 has a double bond between I and O. My question is, can that instead be a single bond? So I'm thinking that the central iodine can just share its whole lone pair to oxygen, ...
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0answers
27 views

What is the mechanism of synthesis of endiandric acid? [on hold]

Q.92. Explain the mechanism of the following transformation. (J. Chem. Commun. 1980. 902) I can't understand how to proceed in this problem. Please help me to figure out the mechanism. ...
1
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2answers
57 views

Why acidity of p-methoxybenzoic acid is more acidic than p-hydroxybenzoic acid?

I know +M effect of $\ce{OCH3}$ is more than $\ce{OH}$, but in my book (ALLEN General organic chemistry), it is given that $\mathrm{p}K_\mathrm{a}$ of para-substituted benzoic acid containing $\ce{...
2
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0answers
33 views

How does electrophilic bromination with 1,2-dibromoethane work?

Hi I am trying to figure out the mechanism of a reaction containing a lithium carbanion and 1,2-dibromoethane in THF. The lithium carbanion is generated by deprotonating using LDA. Then 1,2-...
3
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0answers
24 views

The physical intuition behind some simplifications in electrochemistry

Find the standard reduction potential of $$\ce{AgIO3(s) + e- <=> Ag(s) + IO3-}.$$ $K_\mathrm{sp} = \pu{3.1E-8},$ and the standard reduction potential of $\ce{Ag +e- <=> Ag(s)}$ ...
7
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2answers
47 views

Does broader peak mean stronger absorber in UV/VIS?

I want to ask a question about peaks in a UV/VIS spectrum. My lecturer in our introductory course mentioned the following: Two molecules may have the same molar extinction coefficient, but if I ...
4
votes
1answer
103 views

What is the pKaH of pyrrole?

I am supposed to say what is more basic and I ran into a problem. I would like to ask if anyone has any idea what is the correct $\mathrm{p}K_\mathrm{a}\ce{H}$ value of pyrrole. I know it is easy to ...
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0answers
23 views

Does cordycepic acid have a plane of symmetry? [on hold]

Does cordycepic acid have a plane of symmetry? Is it a meso-compound?
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2answers
44 views

Hess's Law and ΔH

Target equation: $\ce{Mg(s) + 1/2 O2 -> MgO(s)}$ $$ \begin{align} \ce{MgO(s) + 2 HCl(aq) &-> MgCl2(aq) + H2O(l)} &\quad ΔH &= \pu{-1300 kJ} \tag{1}\\ \ce{Mg(s) + 2 HCl(aq) &-&...
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0answers
34 views

Effect of impurities on melting point: large melting range [on hold]

I understand that the melting point of compounds decreases in presence of impurities. The impurities will disrupt the crystal lattice structure, making it less stable and causing a melting point ...
3
votes
1answer
23 views

Is it possible to calculate the 'overall' redox potential of a system?

For a solution where many redox reactions occur (e.g. cytosol, soil solution), can we consider anything as 'overall' redox potential of a system? Is there a formula to quantify it in relation to the ...
1
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0answers
19 views

Dissolving Metal Reduction of 4-Octyne to (E)-4-Octene and What Else?

I was reading Solomon's Organic Chemistry and came across the Dissolving Metal Reduction of 4-Octyne to (E)-4-Octene. (The same as can be found this question) But the book states that the (E)-4-...
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0answers
20 views

How to get the enthalpy of a reaction from the enthalpy of formations with Hess' law?

Let's consider a generic reaction: $$\sum_{i=0}^{i=I}n_{i}A_{i} \rightarrow \sum_{j=0}^{j=J}m_{j}B_{j} $$ where $n$ and $m$ are the stoichiometric coefficients, while $A$ and $B$ are reagents and ...
0
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0answers
26 views

Can sorbitol be used in place of sugar to produce ethanol? [on hold]

I was doing some reading on wine making, then I had an idea would it be possible to use sorbitol to make ethanol. From my reading, sorbitol is a sugar alcohol used as a sugar substitute. The only ...
0
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1answer
49 views

Intrahydrogen bonding

Is it okay to conclude that in 2-nitrophenol where intra hydogen bonding is experienced, two similar molecules are only held by the weak van der waal's forces and is the reason for it to have a ...
0
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1answer
62 views

Why could it be assumed that the standard enthalpy change is independent of temperature down to 25 °C?

For the reversible reaction of pyruvic acid to 2,2-dihydroxypropanoic acid, we calculated enthalpy using NMR and extrapolated from area (integration) and peaks etc. We then plotted $\ln K$ vs $1/T.$ ...
0
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0answers
24 views

How much more carbon dioxide does catalytic converters cause? [on hold]

A typical car has an engine control unit programmed to add more oxygen into the cylinder than is optimal for mechanical power efficiency, to enable combustion in the catalyzer. How much less carbon ...
2
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0answers
36 views

Can stimulated Raman processes be strong enough to drive out of equilibrium?

In the (spontaneous) Raman process, incident light $\hbar \omega_1$ scatters and transfers some energy $\hbar \omega$ to a vibrational excitation of molecule or solid. Typically this is a very rare ...
-2
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1answer
43 views

Why is FeCl3 (not AlCl3) used in chlorination of benzene? [on hold]

The book I am reading and on the internet everywhere I see FeCl3 is used for chlorination of benzene, can we use AlCl3 instead of FeCl3 because I assume it is working as Lewis base as anhy. AlCl3 work ...

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