MHT CET · Chemistry · Some Basic Concepts of Chemistry
The volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P. is
- A \(5 \cdot 6 \mathrm{dm}^{3}\)
- B \(7 \cdot 46 \mathrm{dm}^{3}\)
- C \(22 \cdot 4 \mathrm{dm}^{3}\)
- D \(11 \cdot 2 \mathrm{dm}^{3}\)
Answer & Solution
Correct Answer
(D) \(11 \cdot 2 \mathrm{dm}^{3}\)
Step-by-step Solution
Detailed explanation
(C)
\(\mathrm{CH}_{4}+2 \mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}\)
1 mole of methane required \(=2 \times 22.4 \mathrm{dm}^{3}\) of \(\mathrm{O}_{2}\)
\(\therefore 0.25\) mole of methane required \(=2 \times 22.4 \times 0.25=11.2 \mathrm{dm}^{3}\) of \(\mathrm{O}_{2}\)
\(\mathrm{CH}_{4}+2 \mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}\)
1 mole of methane required \(=2 \times 22.4 \mathrm{dm}^{3}\) of \(\mathrm{O}_{2}\)
\(\therefore 0.25\) mole of methane required \(=2 \times 22.4 \times 0.25=11.2 \mathrm{dm}^{3}\) of \(\mathrm{O}_{2}\)
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