1.

The boiling point elevation and the freezing point depression of solutions have a number of practical applications. Ethylene glycol (CH_(2)OH. CH_(2)OH) is used in automobile radiators as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as antifreeze. For the boiling point elevation to occur the solute must be non-volatile, but no such restriction applies to freezing point depression. For example mthanol (CH_(3)OH), a fairly volatile liquid that boils only at 65^(@)C is sometimes used as antifreeze in automobile radiators. 124g each of the two reagents glycol and glycerol are added in 5kg water of the radiators in the two cars. Which of the following statements is wrong?

Answer»

Both will act as antifreeze
GLYCOL will be BETTER
Glycerol is better because its molar mass is GREATER than glycol
Glycol is more volatile than glycerol.

Answer :C


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