Question

Calculate the amount of CaO formed by the complete decomposition of 10g calciumcarbonate

Answer 1

Answer:

4.4g

Explanation:

This problem is to be solved by using the law of conservation of mass in chemical reactions. In this reaction, calcium carbonate is the reactant whereas calcium oxide and carbon dioxide are products. Now, from the law of conservation of mass we have :

Mass of product = Mass of reactants

or Mass of calciumoxide+Mass of carbondioxide=Mass of calciumcarbonate

So, 5.6+Mass of carbondioxide=10

And, Mass of carbondioxide=10−5.6

=4.4g

Thus, the mass of carbon dioxide formed is 4.4g