Question

50g of limestone on heating produced 20g of quick lime. What is the percentage yield of quick lime​

Answer 1

Given,

Limestone amount = 50g

Quick lime amount = 20g

To find,

The percentage yield.

Solution,

We can simply solve this numerical problem by using the following mathematical process.

Percentage yield

= Actual yield/Theoretical yield × 100

Now, we have to calculate the be theoretical yield.

100 grams CaCO3 produces = 56 grams of quicklime

1 gram of CaCO3 produces = 56/100 grams of quicklime

50 grams of CaCO3 produces = 56 × 50/100 = 28 grams of quicklime

So, the percentage yield

= 20/28 × 100

= 71.42%

Hence, the percentage yield is 71.42%