(b) $A + 2B \rightleftharpoons C + 3D$ $K_{c} = \frac{{p_{C}p_{D}}^{3}}{{p_{A}p_{B}}^{2}} = \frac{0.30 \times (0.50)^{3}}{0.20 \times (0.10)^{2}}$ $= 18.75$
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.