The vapour pressure of ether (molecular mass = 74) is 442 mm Hg at 293 K.
Channel: Doubtnut
Date: 29/03/2020

The vapour pressure of ether (molecular mass = 74) is 442 mm Hg at 293 K. If 3g of a compound A are dissolved in 50g of ether at this temperature, the vapour pressure falls to 426 mm Hg. Calculate the molecular mass of A assuming that the solution of A is very dilute.