Which of the following factors will speed up the rate of evolution of carbon (iv) oxide in the reaction below?
2HCl + CaCO\(_3\) → CaCl\(_2\) + H\(_2\)O + CO\(_2\)

A.

Increasing the concentration of the acid

B.

Increasing the surface area of CaCO\(_3\)

C.

A and B

D.

Reducing the concentration of the acid

Correct answer is C

The following factors increase a reaction rate
- Increase in concentration of reactants
- Increase in temperature
- Addition of catalyst
- Increase in the surface area of reactant(s)