1.

In winter, the normaltemperature in a Himalayan's valley was found to be- 10^(@)C. Is a 30% bymass of aqueoussolutionof ethylene glycol (molarmass = 62) suitablefor car radiator?(K_(f) for water= 1.86K/m) .

Answer»


Solution :`w_(B) = 30g, w_(A) = 70G, k_(f) = 1.86 Km^(-1), M_(B) = 62`
`DELTA T_(f)(1.86 xx 30 xx 1000)/(62 xx 70) = 12.86`
The solutionwill freeze at ` - 12.86^(@)C` and therefore , it will be suitable .


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