At standard temperature and pressure, the molar volumes of Cl2 and NH3 gases are 22.06 and 22.40 L, respectively. (b) On cooling to 160 K, both substances form crystalline solids. Do you expect the molar volumes to decrease or increase on cooling the gases to 160 K?

Video transcript

Hi everyone. This problem tells us to consider CH four, an end to which have molar volumes of 24.4 leaders at standard temperature and pressure. Is there an expected increase or decrease in molar volume if the gas is cooled to negative 200 degrees Celsius. So for this problem, we want to know if there is going to be an increase or decrease in molar volume if the gasses is cooled. Okay, so cooling the gasses is going to decrease the volume or even undergo a phase change under such low temperatures. So because of this, we're going to experience a decrease and moller volume. And so that is going to be our answer for this problem. The molar volume is going to decrease because cooling the gasses will decrease the volume and it can possibly even undergo a phase change at such a low temperature. Okay, so that's it for this problem. I hope this was helpful.