One mole of an ideal gas at standard temperature and pressure occupies 22.4 L (molar volume). What is the ratio of molar volume to the atomic volume of a mole of hydrogen ? (Take the size of hydrogen molecule to be about 1 Å). Why is this ratio so large ?
Atomic volume =43πR3×N=43π(0.5×10−10)3×6.023×10233.154×10−7m3. Molar volume =22.4litre=22.4×10−3m3. Molar volumeAtomic volume=22.4×10−33.154×10−7=7.1×104 This ratio is large due to large intermolecular separtions.
