Question

For which of the following reactions, $K_p=K_c?$

• A. $N_2+3H_{2}2N{H}_3$
• B. $N_2+O_{2}2NO$
• C. $PC{l}_{5}PC{l}_3+C{l}_2$
• D. $2S{O}_{3}2S{O}_2+O_2$

Answer 1

Answer: (B)

$K_p=K_c(RT{)}^{\Delta n}$
For the reaction: $N_2+O_{2}2NO$
$\Delta n=2-2=0$
$\therefore K_p=K_c(RT{)}^0$
$K_p=K_c$