Question

What is the percent yield of the following reaction if 60 grams of CaCO3 is heated to give 15 grams of CaO? CaCO3→CaO + CO2

Answer 1

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

%