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Question -

Calculate the amount of carbon dioxide that could beproduced when

(i) 1 moleof carbon is burnt in air.

(ii) 1 moleof carbon is burnt in 16 g of dioxygen.

(iii) 2 moles of carbon are burnt in 16 g of dioxygen.



Answer -

The balanced reaction of combustion of carbon can bewritten as:

(i) As per the balanced equation, 1 mole of carbon burns in1mole of dioxygen (air) to produce1 mole of carbon dioxide.

(ii) According to the question, only 16 g of dioxygen isavailable. Hence, it will react with 0.5 mole of carbon to give 22 g of carbondioxide. Hence, it is a limiting reactant.

(iii) According to the question, only 16 g of dioxygen isavailable. It is a limiting reactant. Thus, 16 g of dioxygen can combine withonly 0.5 mole of carbon to give 22 g of carbon dioxide.

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