All Questions

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 ...

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

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 ...

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?

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 ...

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 ...

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 ...

should the reaction be replacement of D2 with H?

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 ...

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 ...

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 ...

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 ...

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

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 ...

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'...

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

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,...

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 ...

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. ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

For example, can crystal iodine dissolved in ethanol react with sodium thiosulfate dissolved in water when mixed together?

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

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

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 ...

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, ...

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. ...

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{...

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-...

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 $\ce{Ag +e- <=> Ag(s)}$ ...

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 ...

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 ...

Does cordycepic acid have a plane of symmetry? Is it a meso-compound?

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) &-&...

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 ...

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 ...

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-...

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 ...

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 ...

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 ...

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 $1/T.$ ...

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 ...

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 ...

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 ...