Question

A gas has a density of 2.68 $g / L$ at stp. Identify the gas

• A. $\mathrm { NO } _ { 2 }$
• B. Kr
• C. COS
• D. $\mathrm { SO } _ { 2 }$

Answer 1

Answer: (C)

COS

Answer 2

$d = \frac { M } { V }$ $\Rightarrow$ $M = d \times V$

$M = 2.68 \times 22.4$ at N.T.P. $( \because V = 22.41 )$

$M = 60.03 \mathrm { gm }$

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