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1 g of non-volatile non-electrolyte solute is dissolved in 100 g of two different solvents A and B whose ebullioscopic constants are in the ratio of 1:5. The ratio of the elevation in their boiling point, Δ T b A Δ T b B , is

Options

  1. A5 : 1
  2. B10 : 1
  3. C1 : 5
  4. D1 : 3

Correct answer

C. 1 : 5

Step-by-step solution

Δ T b = K b × m ⇒ Δ T b ∝ K b As m A = m B (given) So Δ T b A Δ T b B = K b A K b B As K b A K b B = 1 5 So Δ T b A Δ T b B = 1 5

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