Chemical Equilibrium

JEE Mains 2015 Sample Questions › Physical Chemistry questions › Chemical Equilibrium

Calculate the equilibrium concentration ratio of C to A if 2.0 ml of each of A and B were allowed to come to equilibrium at 300 K.
A + B C + D
dG = 460 cal

#Chemistry #Physical Chemistry

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4 Answers

661

Gaurav Gardi ·2013-04-15 21:43:39

K=[C][D][A][B]
we know that at equilibrium [C]=[D] and [A]=[B]
so k=[C]²[A]²
therefore [C][A]=âˆšK
also K=e^-Î”GoRT
so,[C][A]=e^-Î”Go2RT

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333

Hardik Sheth ·2013-04-15 05:48:31

i think the ans is the square root of the given ans by swarna..

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Swarna Kamal Dhyawala how cn u explain?????
Upvote·0· Reply ·2013-04-15 06:35:56
Swarna Kamal Dhyawala how cn u explain?????
Upvote·0· Reply ·2013-04-15 06:35:57
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996

Swarna Kamal Dhyawala ·2013-04-11 10:22:43

(deltaGÂ°)/-RT = lnK

K = e^{-deltaGÂ°/RT}

Ans)1.8 x 10^-4

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Bitan Chakraborty No. Not correct. You have to find [C]/[A]....... Please try again!!
Upvote·0· Reply ·2013-04-13 06:07:42
Anurag Ghosh The K dat Swarna evaluated is [C][D]/[A][B].....
Upvote·0· Reply ·2013-04-14 18:52:51
Anurag Ghosh Bitan dada....Give sum hint...
Upvote·0· Reply ·2013-04-14 18:58:22
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106

Bitan Chakraborty ·2013-04-15 23:00:00

@Anurag and @Swarna Kamal: See the above solution. This is how you tackle sums related to equilibrium.
The answer is 0.682.

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