Question

A solid XY kept in an evacuated sealed container undergoes decomposition to form a mixture of gases X and Y at temperature T. The equilibrium pressure is 10 bar in this vessel. $K_p$ for this reaction is :

• A. 5
• B. 10
• C. 25
• D. 100

Answer 1

Answer: (C)

25

Answer 2

$X Y \rightleftharpoons \underset{ P }{ X }+ P$
Total pressure $n P = 1 0 b a r$ $P = 5$
$K _{ P }=\left( P _{ X }\right)\left( P _{ Y }\right)= P ^{2}= 2 5$