Question

1.19g of a volatile liquid gas on complet vaporisation gives 216ml of its vapour at 27'c and 755mm pressure . calculate molar mass of liquid.{R=0.082litatm k-1mol-1}​

Answer 1

Explanation:

1atm is equal to the 750mm so we have pressure we have volume make sure to convert volume into liters we have temperature we can use pv=nRT. from this we can calculated no of moles now we know given mass/molar mass =no of moles so we can find molar mass