Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 ~kg of water to prevent it from freezing at -6^ C will be : [ K _ t . for water =1.86 ~K ~kg ~mol ⁻¹ , and molar mass of ethylene

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Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 ~kg of water to prevent it from freezing at -6^ C will be : [ K _ t . for water =1.86 ~K ~kg ~mol ⁻¹ , and molar mass of ethylene glycol =62 ~g ~mol ⁻¹ )

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Correct answer: D. 804.32 ~g

T _ f = K _ f m = K _ f w ₂ 1000 w ₁ m ₂ w₁ & w₂= wt of solvent & solute respecting m₂=m w of solute T _ f =0^ - (-6^ )=6=1.86 w ₂ 1000 4000 62 Therefore w₂=800 ~g

Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 ~kg of water to prevent it from freezing at -6^ C will be : [ K _ t . for water =1.86 ~K ~kg ~mol ⁻¹ , and molar mass of ethylene glycol =62 ~g ~mol ⁻¹ )

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