Question

$K_C$ for the reaction $\frac{1}{2}{N}_{2\left(g\right)}+\frac{3}{2}{H}_{2\left(g\right)}\rightleftharpoons {NH}_{3\left(g\right)}$ is:

• A. $K_C=\frac{\left[{NH}_3\right]}{\left[N_2\right]\left[H_2\right]}$
• B. $K_C=\frac{\left[N_2\right]\left[H_2\right]}{\left[{NH}_3\right]}$
• C. $K_C=\frac{\left[{NH}_3\right]}{{\left[N_2\right]}^{\frac{1}{2}}{\left[H_2\right]}^{\frac{3}{2}}}$
• D. $K_C=\frac{{\left[N_2\right]}^{\frac{1}{2}}{\left[H_2\right]}^{\frac{3}{2}}}{\left[{NH}_3\right]}$

Answer 1

Answer: (C)

$K_C=\frac{\left[{NH}_3\right]}{{\left[N_2\right]}^{\frac{1}{2}}{\left[H_2\right]}^{\frac{3}{2}}}$

$\frac{1}{2}{N}_{2\left(g\right)}+\frac{3}{2}{H}_{2\left(g\right)}\rightleftharpoons {NH}_{3\left(g\right)}$

$Kc=\frac{[Conc.ofproduct{]}^{molesofproduct}}{[Conc.ofreactant{]}^{molesofreactant}}$

$Kc=$ $\frac{\left[N{H}_3\right]}{\left[N_2{]}^{1/2}\right[H_2{]}^{3/2}}$