and have critical temperatures of 304 K and 190 K, respectively. Pc for = 72 atm and Pc for = 45 atm — States of Matter and Gaseous State Chemistry Question
Question
$CO_2$ and $CH_4$ have critical temperatures of 304 K and 190 K, respectively. Pc for $CO_2$ = 72 atm and Pc for $CH_4$ = 45 atm. The ratio b_CO2 : b_CH4 is
Answer: B
💡 Solution & Explanation
the co-volume b is related to critical constants by b = rtc / (8 pc). for co2: b_co2 = r × 304 / (8 × 72) = 0.528 r. for ch4: b_ch4 = r × 190 / (8 × 45) = 0.528 r. thus, the ratio b_co2 : b_ch4 = 1:1.
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