Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O?

A. CaCO3 is a reactant; it is present before the reaction occurs.

B. CaCl2 is a reactant; it is present before the reaction occurs.

C. CO2 is a reactant because it is most likely a gas.

D. H2O is a reactant because it is most likely a liquid.

Question

Chemistry

Makenna Smith

21 November, 09:43

Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O?

A. CaCO3 is a reactant; it is present before the reaction occurs.

B. CaCl2 is a reactant; it is present before the reaction occurs.

C. CO2 is a reactant because it is most likely a gas.

D. H2O is a reactant because it is most likely a liquid.

+3

Answers (1)

Know the Answer?

Elizabeth Woodard · Answer 1

Statement A is correct.

We no nothing about the states from the equation so it can not be C or D (plus the state will not determine if it is a product or reactant).

CaCl2 is a product because it is written on the right hand of the equation so B is false.

CaCO3 is a reactant as it is written on the left-hand side of the equation and is there fore a reactant, making statement A the correct answer.