Q.

If ΔH  and  ΔS of the following reaction are 182.5kJmol1and 25JK1mol1. At what minimum temperature above which the reaction becomes spontaneous N2(g)+O2(g)2NO(g)

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a

4600K

b

2500K

c

6500K

d

7300K

answer is C.

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Detailed Solution

Teq=182.5×100025=7300 K ;Δ H=+ ve  ;  Δ S=+ ve 
 Process is spontaneous above 7300 K 

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