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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 ...
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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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 ...
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?
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 ...
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 ...
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 ...
23 views

reaction of amides with br2 /NaOH

should the reaction be replacement of D2 with H?
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 ...
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 ...
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 ...
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 ...
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
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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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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Organic Chemistry Extra Credit Questions [on hold]

I am confused on these four questions from my extra credit questions.
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,...
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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
91 views

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 ...
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 ...
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 ...
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?
28 views

NH4+ reaction with NaOH [on hold]

Why does $NH4^+$ react with NaOH to give $NH_3+H_2O$ and not $NH_4OH$
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.
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 ...
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, ...
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. ...