NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions

Question : 4

Total: 36

Calculate the amount of carbon dioxide that could be produced when
(i) 1 mole of carbon is burnt in air.
(ii) 1 mole of carbon is burnt in 16 g of dioxygen.
(iii) 2 moles of carbon are burnt in 16 g of dioxygen.

Solution:

(i)

1‌mole(12g)

1‌mole(32g)

→ C

1‌mole(44g)

Hence, 1 mole of C produces 44 g of CO2.
(ii)

12g

32g

→ C

44g

Here, O2 is the limiting reagent.
Since 32 g of O2 reacts with C to produce 44 g of CO2
Since 16 g of O2 reacts with C to produce

×16 = 22 g of CO2
(iii)

24g

64g

→ 2C

88g

Here, O2 is the limiting reagent.
Since 64 g of O2 reacts with C to produce 88 g of CO2
Since 16 g of O2 reacts with C to produce

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