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InterviewSolution
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35g of ethylene glycol isadded in 1kg of water so that resulting solution freeze sat- 10°C if Kf for water is1.86k/m.find molecular mass of compound. |
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Answer» What MASS of ethylene glycol (Molar mass =62.0g mol −1 ) must be added to 5.50 kg of WATER to lower the freezing point of water from 0 o C to - 10 o C ? (K f for water =1.86 K Kg mol −1 )ΔT f =K f ×mm= M B W B × W A 1000 10=1.86× 62W B × 55001000 W B =1833.3gm |
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