Consider the partial decomposition of A as
`2A(g)hArr2B(g)+C(g)`
At equilibrium 700 mL gaseous mixture contains 100 mL of gas Cat 10 atm and 300 K. What is the value of `K_(p)` for the reaction?

Options

A. `(40)/(7)`
B. `(1)/(28)`
C. `(10)/(28)`
D. `(28)/(10)`

Answer

C

Explanation

`:.` Initially only A is present so at eqm. B and C should be present in 2:1
`underset("At eqm.")(2A(g))hArrunderset(400mL)(2B(g))+underset("200mL 10mL")(C(g))`
for ideal gases valume % -=mole %
`K_(p)=(((200)/(700)xx10)^(2)((100)/(700)xx10))/(((400)/(700)xx10)^(2))=(10)/(28)`