Question

Calculate partial pressure of B at equilibrium in the following equilibrium

$\text{A(s)} \rightleftharpoons \text{B(g)} \, \text{+} \, \text{2C(g);} \, \, \left(\text{K}\right)_{\text{p}} \, \text{=} \, \text{32} \, \left(\text{atm}\right)^{\text{3}}$

• A. 2
• B. 3
• C. 17
• D. 5.8

Answer 1

Answer: (A)

$\text{A(s)} \rightleftharpoons \underset{\text{P}}{\text{B(g)}} \, \text{+} \, \underset{\text{2P}}{\text{2C(g)}}$

At equation $K _{ f }= P. (2 P )^{2}$

$32=4P^{3}$

$P^{3}=8$

$\text{P} \, \text{=} \, \text{2} \, \text{atm}$