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 :
804.32 g
204.30 g
400.00 g
304.60 g
As we learnt in
Mathematical Expression of Depression in Freezing point -
- wherein
m = molarity of solvent
= cryoscopic constant
molal depress const
Units =
Moles of solute
Mass of solute = Moles of solute Molar Mass
Correct option is 1.
Option 1)
804.32 g
This is the correct option.
Option 2)
204.30 g
This is an incorrect option.
Option 3)
400.00 g
This is an incorrect option.
Option 4)
304.60 g
This is an incorrect option.
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