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(a) Write van der Waals equation for n moles of a gas.(b) Critical temperature for CO2 and CH4 are 31.1°C and -81.9°C respectively. Which is easily liquefiable and why? |
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Answer» (a) van der Waals equation for n moles of a gas: PV = nRT Where, P = Pressure V = Volume n = No. of moles R = Gas constant T = Absolute temperature (b) Carbon dioxide (CO2) can be easily liquefied because it has higher critical temperature that means it can be liquefied at higher temperature more easily. So, CO2 has higher inter-molecular forces than methane. |
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