Mass of ethylene glycol (antifreeze) to be added to 18 . 6 kg of water to protect the freezing point at - 24…

Mass of ethylene glycol (antifreeze) to be added to 18.6 kg of water to protect the freezing point at -24°C is kg (Molar mass in gmol-1 for ethylene glycol 62, Kf of water =1.86 K kg mol-1)

Solution

Given, ΔTf= -240C

Molar mass of Ethylene glycol= 62

ΔTf=i Kf×molality

24=(1)×1.86×W62×18.6

W=14880gm

=14.880 kg

Asked in: JEE Main 2024 (01 Feb Shift 2)

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