Buraian
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What is the mathematical meaning of the plus sign (+) in chemical reaction equations?
11 votes

Here is an interpretation I came up for it, so suppose you have the molecule $\ce{CH4}$, then we can think of this as a vector as $ \langle 1,4 \rangle$ where the $1$ stands for number of carbons and $...

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Deriving kinetic equations for reversible reactions
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9 votes

Actually you need concept of coupled differential equations but I suppose you can do a 'trick' to avoid it: $$ \frac{dA}{dt} =- a A + b B$$ $$ - \frac{dB}{dt} = - aA + bB$$ Are the form of the two ...

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Ring formation via oxymercuration-demercuration
3 votes

Observe that there is no nucleophile give in the mercuration step and recall that the three-membered mercury ring intermediate is very reactive. Hence, this is suggestive that the oxygen would attack ...

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Is there a shortcut method to calculate the Steric Number?
2 votes

Here is an alternate method for one central atom molecules which I found in JD LEE adapted by Sudarshan Guha ed 2021. Motivation: This method assumes that all the corner atoms have complete octet. ...

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Regarding change in temperature in Bomb Caloriemeter
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2 votes

Basically, a bomb calorimeter consists of a small cup to contain the sample, oxygen, a stainless steel bomb, water, a stirrer, a thermometer, the dewar or insulating container (to prevent heat flow ...

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Does Raoult's law hold for immiscible liquids?
1 votes

Now, first of all does it hold for a mixture of immiscible liquids ? From Wikipedia on Raoult's law, it states that the partial pressure of each component of an ideal mixture of liquids is equal to ...

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How can you calculate the tendency of one compound to become another?
1 votes

Depending on the constraints you impose on the system, there are different criteria for spontaneity, however, the commonly running theme is that it is related to minimizing some state function. For ...

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Applicability of Enthalpy-Heat relation for a non-isobaric process
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1 votes

Disclaimer: The below discussion only holds to be completely true for reversible processes and for ideal gases. I think the problem is you're thinking of it the wrong way, that is, you first think ...

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Calculating heat of combustion in a bomb calorimeter
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1 votes

In a constant volume bomb-calorimeter, we can make chemical reactions take place. If we let chemical reactions freely take place in it, then the total internal energy change is zero. This is due to ...

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entropy calculation in an irreversible process
1 votes

Entropy change for the system between two points can be determined simply from plugging the final and initial states into the state equation of entropy. The fundamental idea is that entropy change ...

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Order of reaction for hydrogen ions being ignored
1 votes

Imagine you are doing a process which takes 'n' steps. Label the steps : 1,2,3..n, now consider the time it takes to do step 1 , step -2 and so on. Now, wouldn't you agree that the time taken to ...

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Why does a first order reaction only depend on the concentration of a single reactant?
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1 votes

As a purely mathematical definition, a first order reaction is one in which the rate is directly proportional to concentration of reactants. The thing you should look for is physical examples of this. ...

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Why Zn has highest ionisation enthalpy in 3d series?
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1 votes

There is band structure formed in the metallic lattice in the crystals of d and f block elements due to partially filled orbitals. But as you move along the periodic table to 'Zn' , you will find ...

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Energy level of molecular orbitals in heteronuclear diatomic compounds
0 votes

I finally found a practical answer on Quora, the reason of difference in energy levels is due to something known as s-p mixing and it occurs for diatomic molecules having less than or equal to 14 ...

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Energy level of molecular orbitals in heteronuclear diatomic compounds
0 votes

I found this exact point discussed indirectly in JD LEE's inorganic chemistry 5th ed in page 110. In it, the author discusses the CO molecule system where for C it's on order and O it's another, the ...

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Why is the curve of an isothermal process above the that of a adiabatic process during compression?
0 votes

An interpation of the implicit derivative by the marginal rate of substiution makes this clear Marginal rate of substitution In economics, when the level set R(x, y) = 0 is an indifference curve for ...

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SN2 on compound containing halogen and carbonyl
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0 votes

If it attacks the carbonyl carbon, then you form an unstable tetrahedral intermediate with a negative formal charge on the oxygen. Unless you treat the compound with water so that the oxygen can ...

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Why are halogens base sensitive groups (Wolff-Kishner Reduction)?
0 votes

I think the reaction as you told will be very inefficient. To explain why, I quote the paragraph from page-905 of David R Klein's Organic Chemistry (*): "The pH of the solution is an important ...

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Confusion over the rate law
0 votes

Here is a better definition: The rate law of a reaction is the quantity which when scaled by the stoichiometric coefficient of reactant/ product (with sign) gives the rate at which that particular ...

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Are the electrons in an atom always 'locked' with their proton?
0 votes

I asked this question way long back and with a lot more reading, I think I've come up with more specific points to answer this question. the most interesting part is that the wave orbitals are ...

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What is the differnce between energy and enthalpy?
0 votes

The most simplest explanation I can give is this: Enthalpy is the measure of energy contained in a system plus the energy required to assemble it. So, The measure of energy contained in a system is it'...

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stereochem of epoxide opening
-1 votes

In these three-membered ring reactions, it's an SN2 substitution reaction that happens. Hence, there is an inversion of the configuration associated. Edit: Perhaps the mechanism is more complicated ...

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Does unsubstituted benzoic acid not show resonance due to steric effects?
-2 votes

The answer to this is by something known as the first ortho effect, from Wikipedia: When a group is present ortho to carboxylic acid group in substituted benzoic acid, the steric hindrance forces the ...

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Ortho-effect in substituted aromatic acids and bases
-3 votes

To compare, we have to use something called the second ortho effect. From wiki: The protonation of Substituted aniline is inhibited due to steric clashes. Upon protonation the hybridization of ...

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