COMEDK · Chemistry · 5. States of Matter
The density of a gas is \(1.964 \mathrm{~g} \mathrm{dm}^{-3}\) at \(273 \mathrm{~K}\) and \(76 \mathrm{~cm}\) Hg. The gas is
- A \(\mathrm{CH}_{4}\)
- B \(\mathrm{C}_{2} \mathrm{H}_{6}\)
- C \(\mathrm{CO}_{2}\)
- D Xe
Answer & Solution
Correct Answer
(C) \(\mathrm{CO}_{2}\)
Step-by-step Solution
Detailed explanation
\(M=\frac{d R T}{p}=\frac{1.964 \times 0.0821 \times 273}{1}\) \[ M=44 \mathrm{~g} / \mathrm{mol} \] \(\therefore\) So, gas is \(\mathrm{CO}_{2}\).
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