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Question: A reaction mixture containing H2, N2 and NH3 has partial pressure 2 atm, 1 atm and 3 atm respectivel...

A reaction mixture containing H2, N2 and NH3 has partial pressure 2 atm, 1 atm and 3 atm respectively at 725 K. If the value of KP for the reaction, N2 + 3H2\rightleftharpoons 2NH3 is 4.28 ´ 10–5 atm–2 at 725 K, in which direction the net reaction will go

A

Forward

B

Backward

C

No net reaction

D

Direction of reaction cannot be predicted

Answer

Backward

Explanation

Solution

N2 + 3H2 2NH3, KP=4.28×105 atm2\mathrm { K } _ { \mathrm { P } } = 4.28 \times 10 ^ { - 5 } \mathrm {~atm} ^ { - 2 }

Reaction Quotient,

QP > KP,

\therefore Reaction will go Backward.