# 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

Sep 18, 2014

The percent yield is 45 %.

CaCO₃ →CaO + CO₂

First, calculate the theoretical yield of CaO.

Theor. yield = $\text{60 g CaCO"_3 × ("1 mol CaCO"_3)/("100.0 g CaCO"_3) × "1 mol CaO"/("1 mol CaCO"_3) × "56.08 g CaO"/"1 mol CaO" = "33.6 g CaO}$

Now calculate the percent yield.

% yield = "actual yield"/"theoretical yield" × 100 % = "15 g"/"33.6 g" × 100 % = 45 %