The percent yield is 45 %.
CaCO₃ →CaO + CO₂
First, calculate the theoretical yield of CaO.
Theor. yield =
60 g CaCO
3
×
1 mol CaCO
3
100.0 g CaCO
3
×
1 mol CaO
1 mol CaCO
3
×
56.08 g CaO
1 mol CaO
=
33.6 g CaO
Now calculate the percent yield.
% yield =
actual yield
theoretical yield
×
100
%
=
15 g
33.6 g
×
100
%
=
45
