questions from kinetics

Consider this equilibrium:

2SO2(g) + O2(g) ~ 2S03(g)
The forward reaction is proceeding at a certain rate at some temperature and pressure. When the pressure is increased, what might we expect for the forward reaction?

a greater rate of reaction and a greater yield of S03 at equilibrium

The Arrhenius equation describes the relationship between the rate constant, k, and the energy of k -- Ae-Ea/RT

activation, Ea.
In this equation, A is an empirical constant, R is the ideal-gas constant, e is the base of natural logarithms, and Tis the absolute temperature. According to the Arrhenius equation,

at constant temperature, reactions with lower activation energies proceed more rapidly.

What will be the effect of increasing the temperature of reactants that are known to undergo an endothermic reaction?

Both the rate ofreaction and the value ofthe equilibrium constant increases.

The change in temperature from I0 °C to 20 °C is found to double the rate of a particular chemical reaction. How did the change in temperature affect the reaction?

The number o f molecules with sufficient energy to react increased.

The value for the rate constant ofa reaction can generally be expected to

increase with increasing temperature.

Two reactions with different activation energies have the same rate at room temperature. Which statement correctly describes the rates o f these two reactions at the same, higher temperature?

The reaction with the larger activation energy will be faster.

A catalyst increases the rate of a reaction by

changing the mechanism of the reaction.

Which statement most accurately describes the behavior of a catalyst?

A catalyst reduces the activation energy for a reaction and increases the rate of a reaction.

The rate law for the reaction A+B---->C+D

is first order in [A] and second order in [B]. If[A] is halved and [B] is doubled, the rate of the reaction will

be increased by a factor of 2.