Question

For a gaseous reversible reaction, which of the following expressions is correct?

• A. ${{K}_{c}}={{K}_{p}}{{(RT)}^{\Delta n}}$
• B. ${{K}_{p}}={{K}_{c}}+\Delta nRT$
• C. ${{K}_{p}}={{K}_{x}}{{(p)}^{\Delta n}}$
• D. ${{K}_{p}}={{K}_{c}}(RT/\Delta n)$

Answer 1

Answer: (C)

${{K}_{p}}={{K}_{x}}{{(p)}^{\Delta n}}$

Answer 2

For a gaseous reversible reaction, $K_{p}=K_{c}(R T)^{\Delta n}$ $P V=R T$ At constant volume, $P=R T$ then, $K_{p}=K_{x}(P)^{\Delta n}$