Problem: Given the values of K shown below, determine the value of K for the reaction,N2(g) + 2 O2(g) <=> 2 NO2(g).N2(g) + O2(g) <=> 2 NO(g)       K = 18NO2(g)  <=> NO + 1/2 O2(g)     K = 55Give your answer to the 4 decimal places.A.  0.3272B. 0.1697C. 990D. 0.0060E. 54450

FREE Expert Solution

We're being asked to calculate the Kc for the following reaction: 

N2(g) + 2 O2(g) <=> 2 NO2(g).


To calculate the Kc of the reaction equation, we’re going to use Hess’s Law. We’re going to manipulate the reactions with given Kc value to get the reaction equation with the unknown Kc.

Given reactions:

Unknown Kvalue:      N2(g) + 2 O2(g) ⇌ 2 NO2(g).                               Kp = ?

Reaction 1:                    N2(g) + O2(g) ⇌ 2 NO(g)                                    K1 = 18
Reaction 2:                    NO2(g)  ⇌ NO + 1/2 O2(g)                                  K2 = 55

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Problem Details

Given the values of K shown below, determine the value of K for the reaction,

N2(g) + 2 O2(g) <=> 2 NO2(g).

N2(g) + O2(g) <=> 2 NO(g)       K = 18

NO2(g)  <=> NO + 1/2 O2(g)     K = 55

Give your answer to the 4 decimal places.

A.  0.3272
B. 0.1697
C. 990
D. 0.0060
E. 54450

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