TG EAMCET 4 May 2025 Shift 1 Paper

Dalton's Law:
The fraction of vapour pressure from A in the total vapour is equal to its mole fraction in the vapour.
‌

pA

p‌Total ‌

=x1
So, pA=x1p‌Total ‌
Raoult's Law:
The vapour pressure of A above the liquid equals its mole fraction in the liquid multiplied by its pure vapour pressure.
pA=pA∘x2
Combine Both Laws:
From equation (i) and (ii), set pA equal:
x1p‌Total ‌=pA∘x2
Solve for the total vapour pressure:
p‌Total ‌=‌

pA∘x2

x1