Catalysts - AP Chemistry

The active site is the region of an enzyme where substrate binds. This specific binding site determines the enzyme's catalytic specificity.

No, catalysts do not affect the overall stoichiometry. Catalysts change reaction pathways but not the balanced chemical equation.

Increasing temperature generally increases catalytic activity. Higher temperatures provide more kinetic energy for catalyst-reactant interactions.

Platinum in catalytic converters of vehicles. It converts toxic exhaust gases into less harmful substances.

No, a catalyst does not change the equilibrium constant. Catalysts only affect reaction rates, not the thermodynamic equilibrium position.

To lower the activation energy and accelerate the reaction. Catalysts enable faster reaction rates by reducing energy barriers.

Deactivation of a catalyst by impurities. Poisoning reduces or eliminates the catalyst's ability to function effectively.

To reduce the need for energy and minimize waste production. Catalysts enable more efficient, environmentally friendly chemical processes.

A catalyst increases the rate of a reaction. It provides an alternative pathway with lower activation energy.

A catalyst does not affect the Gibbs free energy change. Catalysts change kinetics but not the overall energy change of reactions.

Biocatalysis involves enzymes. Enzymes are biological catalysts that accelerate metabolic reactions.

A catalyst in a different phase than the reactants. The catalyst exists in a different state of matter from the reactants.

An enzyme is a biological catalyst. Enzymes are proteins that catalyze biochemical reactions in living organisms.

Catalysts can increase efficiency and reduce energy consumption. They enable faster reactions at lower temperatures, saving energy costs.

A support provides a surface for the catalyst to disperse. Supports increase surface area and prevent catalyst particle aggregation.

No, a catalyst is not consumed in the reaction. It participates in the reaction but is regenerated in the final step.

Homogeneous catalysts are in the same phase as reactants; heterogeneous are not. Phase differences affect separation, recovery, and reaction mechanisms.

A substance that increases reaction rate without being consumed. It speeds up reactions by providing an alternative pathway but remains unchanged after the reaction.

A catalyst increases the rate constant $k$. Higher $k$ values result from the lower activation energy pathway.

A catalyst in the same phase as the reactants. Both catalyst and reactants exist in the same state of matter.

Yes, a catalyst provides an alternative reaction mechanism. The mechanism involves the catalyst in intermediate steps.

The process by which a catalyst is restored to its original state. This allows the catalyst to be reused multiple times.

A sequence of steps involving a catalyst that regenerates the catalyst. The catalyst is consumed and regenerated in a repeating sequence.

A catalyst reduces the time required to reach equilibrium. Faster kinetics mean equilibrium is achieved more quickly.

An enzyme is a biological catalyst. Enzymes are proteins that catalyze biochemical reactions in living organisms.

Yes, a catalyst provides an alternative reaction mechanism. The mechanism involves the catalyst in intermediate steps.

The process by which a catalyst is restored to its original state. This allows the catalyst to be reused multiple times.

A catalyst reduces the time required to reach equilibrium. Faster kinetics mean equilibrium is achieved more quickly.

The active site is the region of an enzyme where substrate binds. This specific binding site determines the enzyme's catalytic specificity.