Practice Test 3

A student investigates the reaction between aqueous sodium hydroxide and aqueous ethyl acetate (mechanism assumed unchanged between trials). Trial 1 is run at a lower temperature; Trial 2 is run at a higher temperature. The initial concentrations and volumes of both solutions are the same in both trials, and no catalyst is added. Trial 2 proceeds faster. Which statement best explains the faster rate in terms of collision frequency/effectiveness?​​

A reaction between two gases, $\text{NO(g)}$ and $\text{O}_3\text{(g)}$, is studied in a rigid container under two conditions. The mechanism is unchanged. Condition 1 is at a lower temperature, and Condition 2 is at a higher temperature; the amounts of gases and the volume are the same. Which statement best explains why the reaction occurs faster in Condition 2 using collision-model reasoning?