Question

calculate the mass of carbon dioxide gas that would be obtained from complete decomposition of 50 g of calcium carbonate ( ca = 40,c= 12,O= 16)

Answer 1

$\boxed{\bf CaCO_{3}\rightarrow CaO + CO_{2}}$

From the chemical reaction , we can say:

• 1 mole of CaCO3 produces 1 mole of CO2 gas.

• So, 100 grams (i.e. 1 mole) CaCO3 can produce 44 grams (i.e. 1 mole) of CO2.

In our sample, their is 50 grams of CaCO3.

This the amount of carbon dioxide produced is:

$= \dfrac{44}{100} \times 50$

$= \dfrac{44}{2}$

$= 22 \: grams$

So, 22 grams of CO2 will be produced.