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Question

Reaction between nitrogen and oxygen takes place as follows:
2N2(g) + O2(g)2N2O(g)
If a mixture of 0.482 of N2 and 0.933 mol of N2 is placed in a reaction in a reaction vessel of volume 10L and allowed to form N2O at a temperature for which Kc=2.0 × 1037. Determine the composition of the equilibrium mixture.

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Solution

2N2+O22N2O
Initial 2×0.482 0.933 0
Equilibrium
.9642x 0.933x 2x
Kc=2×1037
Volume =10lit (Given)
Kc=[N2O]2[O2][N2]2
2×1037=4x2(0.933x)(.9642x)2
x<<<1
0.933x=0.933
4x2=2×1037×0.933×(0.964)2
x=0.065×1018mole
Composition of N2=.4820.065×1018
=0.482mole
O2=0.9330.065×1018
=0.0933mole
N2O=0.065×1018

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