The reaction rate for a process that follows the rate law is when and at a fixed…

CHEMISTRY · Single correct · A Level · Chemistry · Rate equations · Rate equations

Problem

The reaction rate for a process that follows the rate law

\text{rate} = k[A]^2[B]

4.0 \times 10^{-4}\,\text{M}\cdot\text{s}^{-1}

when

[A] = 0.20\,\text{M}

and

[B] = 0.10\,\text{M}

at a fixed temperature. What is the predicted initial rate when

[A] = 0.10\,\text{M}

and

[B] = 0.30\,\text{M}

while the temperature remains the same? (a)

1.8 \times 10^{-3}\,\text{M}\cdot\text{s}^{-1}

(b)

1.0 \times 10^{-4}\,\text{M}\cdot\text{s}^{-1}

(c)

3.0 \times 10^{-4}\,\text{M}\cdot\text{s}^{-1}

(d)

6.0 \times 10^{-4}\,\text{M}\cdot\text{s}^{-1}