Question

How many grams of Calcium Oxide will be produced on the decomposition of 20g of 20% pure calcium carbonate?​

Answer 1

• We know that:

• We are given:

• The chemical equation for the decomposition of calcium carbonate follows:

• By Stoichiometry of the reaction:

• To calculate the percentage purity of sample, we use the equation:

• Putting values in above equation, we get:

• Hence, the percentage purity of calcium carbonate is 66.73 %

Answer 2

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• We know that:

We are given:

• The chemical equation for the decomposition of calcium carbonate follows:

• By Stoichiometry of the reaction:

• To calculate the percentage purity of sample, we use the equation:

• Putting values in above equation, we get:

• Hence, the percentage purity of calcium carbonate is 66.73 %