1.

Elevation of boiling point is inversely proportional to :(A) molal elevation constant (Kb)(B) molality (m)(C) molar mass of solute (M)(D) weight of solute (W)

Answer»

Option : (C) molar mass of solute (M)

ΔTb = kbm

or, ΔTb = kb\(\frac{W_1}{M\times W_2}\),

Where Kb = molal elevation constant, m = molality

or, ΔTb = kb\(\frac{W_1}{M\times W_2}\),

Where W1 = mass of solute,W2 = mass of solvent, M = molar mass of solute.

∴ ΔTb ∝ \(\frac{1}{M}\)

Therefore,

Elevation of boiling point is inversely proportional to molar of solute (M).



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