Solutions and Colligative PropertiesmediumMCQ SINGLE

A solution containing 12.5g of non-electrolyte substance in 185g of water shows boiling point elevatSolutions and Colligative Properties Chemistry Question

Question

A solution containing 12.5g of non-electrolyte substance in 185g of water shows boiling point elevation of 0.80 K. Calculate the molar mass of the substance. SOLUTIONS (Kb = 0.52 K kg mol-1)

Answer: D

💡 Solution & Explanation

12.5 185 B A W g W g 0.80 ? b B T K M 1000 0.52 12.5 1000 0.8 185 43.92 / b B B b A B B K W M T W M M g mole x x x x x x Note : Remember b K value of water is 0.52K kg/mole. As it may not be given in all problems.

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