Question

Which of the following correctly represents a balanced chemical equation?
A. 2CaO(s) + 3C02(g) → 2CaCO3
B. 2CaO(s) + CO2(g) → 2CaCO3
C. CaO(s) + CO, (g) + CaCO,
D. CaO(s) + 2CO, (g) + CaCO3​

Answer 1

Answer:

option D is correct

it's helpfull for you

Answer 2

The number of atoms should be equal on both sides of the equation that is reactant and product this kind of reaction is known as a balanced chemical equation.

Explanation

1) Calcium oxide on reacting with Carbon dioxide produces Calcium bicarbonate.

2) Calcium oxide formula is CaO, Carbon dioxide formula is $CO_{2}$, Calcium bicarbonate formula is $CaCO_{3}$.

3) So when one mole of calcium oxide reacts with one mole of carbon dioxide to produce one mole of calcium bicarbonate.

4) We have one calcium atom ,3 oxygen atoms and one carbon atom on the reactant side whereas one calcium atom ,3 oxygen atoms, and one carbon atom on the product side.

final answer

balanced chemical equation is

CaO + $CO_{2}$ → $CaCO_{3}$