At 298 K, the value of $\mathrm{K}_{\mathrm{p}}$ for $\mathrm{N}_2 \mathrm{O}_4(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_2(\mathrm{~g})$ is 0.113 atm. The partial pressure of $\mathrm{N}_2 \mathrm{O}_4$ at equilibrium is 0.2 atm. What is the partial pressure (in atm) of $\mathrm{NO}_2$ at equilibrium ?

• A

  $0.05$
• B

  $0.075$
• C

  $0.30$
• Correct answer
  D

  $0.15$

Hence, the correct answer is option: 'D'.