AP Chemistry Thou Shall Not Forget- Part 2

Front

What is the unit for the rate constant (k) for 1st order reactions?

Back

s⁻¹

Front

What order is represented by a graph that shows a quadratic relationship between concentration and time?

Back

Second

Front

Which step of a reaction mechanism determines the rate of the reaction?

Back

The slow step

Front

In a molecule, if Carbon has a formal charge of -1 and Nitrogen has a formal charge of 0, what does this indicate about their electron distribution?

Back

Carbon has one more electron than protons, while Nitrogen has a balanced charge.

Front

What is the formula for calculating the change in enthalpy (ΔH) for a reaction?

Back

ΔH_rxn = ΔH_products - ΔH_reactants

Front

What is the relationship between the rate of a reaction and the concentration of reactants in a first-order reaction?

Back

The rate is directly proportional to the concentration of the reactant.

Front

What does a zero-order reaction graph look like?

Back

A straight line with concentration on the y-axis and time on the x-axis.

Front

How does temperature affect the rate of a chemical reaction?

Back

Increasing temperature generally increases the reaction rate.

Front

What is the significance of the activation energy in a chemical reaction?

Back

It is the minimum energy required for reactants to form products.

Front

What is a catalyst and how does it affect a chemical reaction?

Back

A catalyst speeds up a reaction without being consumed by lowering the activation energy.