Ethylene glycol, C2H6O2, is infinitely miscible (soluble) in water. It is a nonelectrolyte that is used as antifreeze. What is the lowest possible melting point for engine coolant that is 26.1% ethylene glycol

The lowest possible melting point for engine coolant that is 26.1% ethylene glycol is

Explanation:

Depression in freezing point or melting point is given by:

= Depression in freezing point

i= vant hoff factor  = ( 1 for non electrolyte)

 = freezing point constant for water=

m= molality

Given : 26.1 g of ethylene glycol in 100 g of water

Weight of solvent (water)= 100 g = 0.1 kg     (1kg=1000g)

Molar mass of solute (ethylene glycol)  = 62 g/mol

Mass of  solute (ethylene glycol) added = 26.1 g

Thus  the lowest possible melting point for engine coolant that is 26.1% ethylene glycol is

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