Question

For the equilibrium, $X_2(g) + O_2(g) \rightleftharpoons 2XO(g)$, the equilibrium concentrations of $X_2(g)$ and $O_2(g)$ are $4 \times 10^{-3}M$ and $8 \times 10^{-3}M$ respectively. What is the equilibrium concentration of $XO(g)$? ($K_c = 0.5$)

• A. $4 \times 10^{-3}M$
• B. $6 \times 10^{-3}M$
• C. $5 \times 10^{-3}M$
• D. $2 \times 10^{-3}M$
• E. $8 \times 10^{-3}M$

Hint:

Always square root when concentration is squared in $K_c$.

Answer 1

The Correct Option is A