Chemical Kinetics Fall 24

Front

What is the rate of the reaction BF3(g) + NH3(g) ⟶ F3BNH3(g) when [BF3] = 0.100 M and [NH3] = 0.500 M?

Back

.1704 M/s

Front

What is the rate law for the reaction BF3(g) + NH3(g) ⟶ F3BNH3(g)?

Back

rate = k[BF3][NH3]

Front

Which factors increase the rate of a reaction?

Back

Increasing temperature, increasing concentration, increasing surface area, all of the above.

Front

If the rate law is rate = k[A]^2[B], what must happen to [B] if [A] is doubled to keep the rate constant?

Back

[B] must be quartered.

Front

What letter represents the activation energy in a reaction?

Back

A

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the effect of increasing temperature on reaction rates?

Back

Increasing temperature generally increases reaction rates by providing more energy to the reactants.

Front

What is the relationship between concentration and reaction rate?

Back

Increasing the concentration of reactants typically increases the reaction rate.

Front

Explain the concept of a rate law.

Back

A rate law expresses the relationship between the rate of a chemical reaction and the concentration of its reactants.

Front

What does the symbol 'k' represent in a rate law?

Back

'k' is the rate constant, which is specific to a particular reaction at a given temperature.