Question

when 13.2 g of carbon were burned in the presence of 49.8g of oxygen, 14.6g of oxygen remained unreacted. what mass of carbon dioxide was produce?

Answer 1

The balanced chemical equation for the given reaction is

C+O2 ->CO2

From this we get the following information:

12g of carbon reacts with 32g of oxygen and forms 44g of CO2.

13.2g of carbon reacts with-? g of oxygen

=13.2gx32g/12g

=35.2 g

Hence, from the data it is clear that (49.8-14.6)g=35.2g of oxygen is only reacting.

Oxygen is the excess reagent.

Carbon is the limiting reagent.

12g of carbon gives 44g of CO2

Then 13.2g of carbon gives how many grama of CO2?

=13.2gx44g/12g

=48.4g of CO2

Hence,48.4g of carbon dioxide is formed.