Practice question

Given: For the reaction 2P + Q -> 3R, the rate of disappearance of Q is 1.5 × 10⁻³mol L^{-1 s^{-1 . What is the rate of formation of R? Formula: Rate = -1/2 fracΔ[P]Δ t = -fracΔ[Q]Δ t = 1/3 fracΔ[R]Δ t. Substitution & Calculation: -fracΔ[Q]Δ t = 1.5 × 10⁻³, so fracΔ[R]Δ t = 3 × 1.5 × 10⁻³= 4.5 × 10⁻³. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.