FTV2A Chemical Kinetics Quiz

What does chemical kinetics study?

• The pressure of chemical reactions

• The rate of chemical reactions

• The color of chemical reactions

• The temperature of chemical reactions

What is the rate of reaction defined as?

• Change in pressure over time

• Change in volume over time

• Change in concentration over time

• Change in temperature over time

What is the initial rate of a reaction dependent on?

• The pressure of the system

• The final concentration of products

• The initial concentrations of reactants

• The temperature of the environment

What does the term 'instantaneous rate' refer to?

• Rate at the end of the reaction

• Average rate over the entire reaction

• Rate at the beginning of the reaction

• Rate at a specific moment in time

In the differential rate equation, what does the square bracket represent?

• Pressure in atm

• Temperature in Kelvin

• Volume in liters

• Concentration in mol/dm³

What is the unit of the rate constant for a first-order reaction?

• mol⁻¹·dm³·s⁻¹

• mol/dm³·s

• s⁻¹

• dm³·mol⁻¹·s

For a zero-order reaction, how is the half-life related to the initial concentration?

• Exponential

• Independent

• Directly proportional

• Inversely proportional

What effect does increasing temperature have on reaction rates?

• Increases the rate

• Decreases the rate

• Makes the reaction reversible

• Has no effect

What is a catalyst?

• A substance that alters the rate of a reaction without being consumed

• A substance that slows down a reaction

• A product of a chemical reaction

• A reactant that is used up

What happens to the rate of reaction when pressure is increased in gaseous reactions?

• It becomes zero

• It remains the same

• It increases

• It decreases