Tardigrade
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Chemistry
Some of the reactions and their equilibrium constants Kc are given. Choose the reaction which proceeds rarely at the given temperature. .
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Q. Some of the reactions and their equilibrium constants $K_c$ are given. Choose the reaction which proceeds rarely at the given temperature. .
KEAM
KEAM 2022
A
$2 H _2( g )+ O _2( g ) \rightleftharpoons 2 H _2 O ( g ) ; K _{ c }=2.4 \times 10^{47}$ at $500 K$
B
$H _2( g )+ l _2( g ) \rightleftharpoons 2 Hl ( g ) ; K _{ c }=57.0$ at $700 K$
C
$H _2( g )+ Cl _2( g ) \rightleftharpoons 2 HCl ( g ) ; K _{ c }=4.0 \times 10^{31}$ at $300 K$
D
$N _2( g )+ O _2( g ) \rightleftharpoons 2 NO ( g ) ; K _{ c }=4.8 \times 10^{-31}$ at $298 K$
E
$H _2( g )+ Br _2( g ) \rightleftharpoons 2 HBr ( g ) ; K _{ c }=5.4 \times 10^{18}$ at $300 K$
Solution:
Correct answer is (d) $N _2( g )+ O _2( g ) \rightleftharpoons 2 NO ( g ) ; K _{ c }=4.8 \times 10^{-31}$ at $298 K$