Question

3

Calcium oxide is made from the thermal decomposition of calcium carbonate: CaCO3 CAO + CO2
a) Calculate the maximum mass of calcium oxide that could be formed from heating 500 g of calcium
carbonate.

Answer 1

Step-by-step explanation:

n CaCO3 = mass / m.wt

= 500 /( 40 + 12 + 16x 3)

= 5 mole

n CaO = 5 moles ( from the balanced equation we have 1:1 moles )

mass of CaO = nCaO X m.wt

5 x( 40 +16 )

= 280 grams