DIFFUSION
GRAHAM'S LAW · NH₃ vs HCl
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Which Gas is Faster?
NH₃
HCl
NH₄Cl (white ring)
NH₃ = 17
lighter → faster
HCl = 36.5
heavier → slower
NH₄Cl
white ring
1. Graham's Law
A lighter gas diffuses faster
rate ∝ 1 / √(molar mass)
2. Reaction
NH₃ + HCl → NH₄Cl (white smoke)
The ring forms near the HCl end
3. Rozmarra
The smell of perfume
spreads through the room
MATRIC CHEMISTRY · STATES OF MATTER · PUNJAB BOARDS
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