Question

Which of these does NOT affect the rate of a chemical reaction?

presence of a catalyst
duration
concentration
temperature

Answer 1

Answer:

presence of a catalydt

Answer 2

Answer:

1) presence of a catalyst

Explanation:

The factors that affect reaction rates are:

surface area of a solid reactant.

concentration or pressure of a reactant.

temperature.

nature of the reactants.

presence/absence of a catalyst