Match the following: Column I: (A) Q = Keq; (B) Q < Keq; (C) Q > Keq; (D) Keq >>> 1. Column II: (P) — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

Column I vs Column II: \begin{itemize} \item \textbf{(A) $Q = K_{eq}$} → System is already at equilibrium; no net reaction. Matches \textbf{S: System at equilibrium}. \item \textbf{(B) $Q < K_{eq}$} → Concentration of products is below equilibrium; reaction must proceed in the forward direction to reach equilibrium. Two statements apply: \textbf{Q: System not at equilibrium} (because $Q \neq K$) and \textbf{R: Forward reaction is favoured}. Matches \textbf{Q, R}. \item \textbf{(C) $Q > K_{eq}$} → Concentration of products exceeds equilibrium value; reaction shifts backward. Matches \textbf{Q: System not at equilibrium} only (reverse is favoured, not listed as a separate match here). Matches \textbf{Q}. \item \textbf{(D) $K_{eq} \gg 1$} → Products heavily favoured; reaction goes virtually to completion. Matches \textbf{P: Reaction near completion}. \end{itemize} \textbf{Answer: A} — A→S; B→Q,R; C→Q; D→P