wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The mass of a non-volatile solute of molar mass 40 g mol1, which on dissolution in 57 g octane to reduces the vapour pressure of octane by 20%, is

Open in App
Solution

Relative lowering of vapour pressure(RLVP) is a colligative property given by
P0PsP0=Xb=nBnA+nB
Here A represents solute, B represent solvent (octane) and all other terms have their ususal meanings.
RLVP=nBnA=P0PsP0=0.2
=wB/4057/114+wB/40=0.2
wB=5


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Relative Lowering of Vapour Pressure
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon