Question

What will be the pressure of the gas mixture of $3.2g$methane and $4.4g$carbon dioxide contained in a 9 $dm^{3}$flask at $27^{0}C$?

• A. $0.82atm$
• B. $8.314 \times 10^{4}atm$
• C. 1 atm
• D. $1.8atm$

Answer 1

Answer: (A)

$0.82atm$

Answer 2

: $P = \frac{n}{v}RT$

n for $CH_{4} = \frac{3.2}{16} = 0.2;nforCO_{2} = \frac{4.4}{44} = 0.1$

$n_{total} = 0.2 + 0.1 = 0.3$

$P = \frac{0.3 \times 0.0821 \times 300}{9} = 0.82atm$