Question

For a reversible reaction taking place at 127 degree celsius and 1ATM pressure.delta G=23.5kj/mol.
for the forward reaction,calculate value of eqm.constant for the reaction

Answer 1

\[\LARGE \delta G=-2.303RTlogK\]
I used this,getting wrong answer.

Answer 2

\[\LARGE 23500=-2.303 \times 8.314 \times 400 \times logK\]

Answer 3

relation to yahi hota hai mere khayaal.

Answer 4

\[\LARGE K=10^{0.30}\]
gettting something likethis

Answer 5

not sure if i substituted correctly,the values

Answer 6

127 degree Celsius hai. convert it into kelvin

Answer 7

acha kiya hai. thik hai.

Answer 8

did,400K

Answer 9

e^7.07 hai answer?

Answer 10

arre numerically nikaalo

Answer 11

e wagera nahi :/

Answer 12

1176.14

Answer 13

its 8.59*10^-4

Answer 14

dekhta hun. get back to you later.

Answer 15

dont do it after 12AM :P

Answer 16

aa to rha hai. kya problem hai? calculator se krna pdega.

Answer 17

kya aya logk?

Answer 18

and meri substituted values sahi thi?
yuhuuuuuuuuuuu @yrelhan4

Answer 19

haan haan thik thi. mereko yaad nhi kya aaya tha.
pehle log(1/K) niklega. kyun ki -logK=log(1/K), fir 10^(---)=abc bhi krke 1/K niklega, fir 1/abc krke K niklega.

Answer 20

okay :|

Answer 21

TY

Answer 22

yw. :/

Answer 23

it'll be
-23500 = -RT lnK

Answer 24

why -23500?

Answer 25

forward reacn would imply dG < 0

Answer 26

its a reversible reaction.

Answer 27

question wants us to calc K for forward reacn

Answer 28

and delta G for the forward reaction is given. if it was negative it would have been given

Answer 29

dG for forward reacn ? o.O It means nothing. dG for the whole reacn is given. for it to proceed forward, dG< 0 .

Answer 30

hmm. :O
but i still have my doubts.
when you say deltaG=-nFE(electrochem), and you are given a deltaG for a reaction, and you are a deltaG, do you do -deltaG then too?
i think the negative sign on the RHS takes care of that.
i dont know. i may be wrong.

Answer 31

Well anytime dG is put with the sign. The sign is always given in the ques.
This was a different ques which asks us to calc K for forward reacn, Well I don't understand the ques practically, but theoretically, you will have to take dG<0. I have cross checked the ans via that.

Answer 32

-23500 = -RT lnK gives you 8.59*10^-4?

Answer 33

dafaq! it doesn't! o.O

Answer 34

I was wrong1 -_-

Answer 35

got carried away, so sorry! :|

Answer 36

haha.. np. :P