Question

Write a balanced chemical equation for the production of CaO(s) from the decomposition reaction of

limestone, CaCO3(s), into carbon dioxide gas and solid calcium oxide. Make sure to include the states

of each substance in the reaction.

Neutralization of Lake Weslemkoon near Bancroft, Ontario requires 10.0 kg of CaO. If you have 12.0

kg of CaCO3 available in your lab, do you have enough CaCO3 to produce the amount of CaO

necessary to neutralize the lake?

Answer 1

CaCO_3(s) = CaO_(S) + CO_2(g)

CaCO_3(s) = CaO_(S)

100g CaCO_3(s) = 56g CaO_(S)

1g CaCO_3(s) = 56/100g CaO_(S)

12000g CaCO_3(s) = 56 × 12000g/100 CaO_(S)

= 6720g CaO_(S)

= 6.72Kg which will not be enough