1. Tardigrade
  2. Question
  3. Chemistry
  4. At certain hill-station pure water boils at 99.725°C.If Kb for water is 0.513°C kg mol-1. The boiling point of 0.69 m solution of urea will be

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Q. At certain hill-station pure water boils at 99.725$^\circ$C.If $K_b$ for water is 0.513$^\circ$C $kg mol^{-1}$. The boiling point of 0.69 m solution of urea will be

Solutions

Solution:

$\Delta \, T_b = K_b \times m = 0.513 \times 0.69 = 0.3539^{\circ} $
$\therefore $ b.pt. of solution = $99.725^{\circ} + 0.3539^{\circ} C$
= $100.079^{\circ}$