Question

8.
1.5 mole of CH4 is completely burnt in excess of air. The gram of O2
consumed is

a. 24
b. 32
c. 48
d. 96​

Answer 1

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Answer 2

D. 96​ is the proper answer.

Explanation:

• The equation of chemical response CH₄ + 2O₂ → CO₂ + 2H₂O.
• 1 mole→ 2 moles
• The Molar mass of oxygen is 16 x 2 = 32 grams per mole.
• 1-mole methane requires 64 g of oxygen.
• 1.5 moles methane requires (64 x 1.5) g = 96 g oxygen.

Therefore, 96grams of oxygen is the final answer.

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