A reaction obeys the rate law

CHEMISTRY · Subjective · A Level · Chemistry · Rate equations · Rate equations

Problem

A reaction obeys the rate law rate=k[A][B]2[C]\text{rate} = k[A][B]^2[C]. At 25 ∘C25\,^{\circ}\text{C} the initial concentrations and rate are [A]0=0.40 M[A]_0 = 0.40\,\text{M}, [B]0=0.20 M[B]_0 = 0.20\,\text{M}, [C]0=0.10 M[C]_0 = 0.10\,\text{M}, rate0=1.6×10−3 M s−1\text{rate}_0 = 1.6 \times 10^{-3}\,\text{M}\,\text{s}^{-1}. Keeping the temperature constant, the concentrations are changed to [A]=0.10 M[A] = 0.10\,\text{M}, [B]=0.60 M[B] = 0.60\,\text{M}, [C]=0.20 M[C] = 0.20\,\text{M}. Calculate the new reaction rate (in M s−1\text{M}\,\text{s}^{-1}).

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