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Listed in the table are forward and reve...

Listed in the table are forward and reverse rate constants for the reaction
`2NO(g)hArrN_(2)(g)+O_(2)(g)`
`{:(,Temperature(K),k_(f)(M^(-1)s^(-1)),k_(b)(M^(-1)s^(-1))),(,1400,0.29,1.1xx10^(-6)),(,1500,1.3,1.4xx10^(-5)):}`
Select the correct statement

A

Reaction is exothermic and value of equilibrium constant `(K_(eq))` at 1400 K is `3.79xx10^(-6)`

B

Reaction is endothermic and value of equilibrium constant `(K_(eq))` at 1400 K is `2.63xx10^(5)`

C

Reaction is exothermic and value of `K_(eq)` at 1400 K is `2.63xx10^(5)`

D

Reaction is endothermica and value of `K_(eq)` at 1500 K is `9.28xx10^(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`K_(eq)` at 1400 K `=(0.29)/(1.1xx10^(-6))=0.26xx10^(6)`
`=26xx10^(4)`
`K_(eq)` at `1500K=(1.3)/(1.4xx10^(-5))=0.92xx10^(5)`
`=92xx10^(3)`
Since, `K_(eq)` decreases on increasing temperature So reaction is exothermic
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