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What will be the freezing point of a solution of 4 moles of sodium dichromate (Na2Cr2O7) dissolved in 12 kg of water?
Use the following values:
Kb = 0.512 K · m-1
Kf = 1.86 K · m-1
1. 272.22 K
2. 272.64 K
3. 270.78 K
4. 271.29 K
5. 267.57 K
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