contestada

Part B
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence
of 52.1 g of oxygen, 10.5 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

Respuesta :

When the Carbon reacts with oxygen it produce CO₂. This can be depicted by the below equation.

C + O₂ → CO₂. By the given process, 57.2 g of CO₂ are produced.

It has been mentioned that when 15.6 g of C reacts with 52.1 g of O₂  , then 10.5 g of O₂ remains unreacted. It indicates that Carbon is the limiting reagent and hence the amount of CO₂ produced is based on the amount of Carbon burnt.

C + O₂ → CO₂

In the given equation , 1 mole of carbon reacts with the  1 mole of O₂ to produce 1 mole of CO₂.

In the case 15.6 g of Carbon reacts with 52.1 of O₂ to produce the  "x" g of CO₂.

No of moles of a substance = mass of  the substance/molar mass of  substance

No of moles of carbon = 15.6 /12= 1.3 moles

No of moles of O₂ = Mass of reacted O₂/Molar mass of O₂.

No of moles of O₂ = (Total mass of O₂ burned - Mass of unreacted O)/32

No of moles of O₂ = (52.1-10.5) ÷ 32 = 1.3 moles.

Hence as already discussed 1 mole of Carbon reacts with 1 mole of O₂ to produce 1 mole of CO₂. In this case 1.2 moles of carbon reacts with 1.3 moles of O₂ to produce 1.3 moles of CO₂.

Moles of carbon dioxide = Mass of CO₂ produced /Molar mass of CO₂

Mass of CO₂ produced(x) = Moles of CO₂ ×Molar mass of CO₂

Mass of CO₂ produced(x) = 1.3 x 44 =  57.2 g

Thus 57.2 g of CO₂ is produced.

To know more about formation of CO₂ , please refer:

https://brainly.com/question/15030226

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