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A 0.5 molal solution of ethylene glycol in water is used as coolant in a car. If the freezing point constant of water be 1.86^ C per mole, the mixture shall freeze at

Options

  1. A0.93^ C
  2. B-0.93^ C
  3. C1.86^ C
  4. D-1.86^ C

Correct answer

B. -0.93^ C

Step-by-step solution

aligned & T_f=K_f m=1.86 0.5=0.93^ C ; & T_f=-0.93^ C aligned

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