At the reaction obeys the rate law

CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics

Problem

At 25 ∘C25\,^{\circ}\text{C} the reaction 2 NO(g)+O2(g)→2 NO2(g)2\,\text{NO}(g) + \text{O}_2(g) \rightarrow 2\,\text{NO}_2(g) obeys the rate law rate=k[NO]2[O2]\text{rate} = k[\text{NO}]^2[\text{O}_2]. The initial concentrations are [NO]=0.10 M[\text{NO}] = 0.10\,\text{M} and [O2]=0.50 M[\text{O}_2] = 0.50\,\text{M}. Laboratory data show that increasing the temperature from 25 ∘C25\,^{\circ}\text{C} to 35 ∘C35\,^{\circ}\text{C} increases kk by only a factor of 1.31.3. Which single change is most likely to approximately double the initial reaction rate while all other conditions remain unchanged? (a) Raise the temperature from 25 ∘C25\,^{\circ}\text{C} to 35 ∘C35\,^{\circ}\text{C} (b) Introduce a heterogeneous catalyst into the reaction mixture (c) Increase [O2][\text{O}_2] from 0.50 M0.50\,\text{M} to 1.00 M1.00\,\text{M} (d) Increase [NO][\text{NO}] from 0.10 M0.10\,\text{M} to 0.12 M0.12\,\text{M}

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