1.

A solution containing 10 mole of ethylene glycol dissolved in 1000 g of water (K_(f) = 1.86 K "molality^(-1) will freeze at:

Answer»

273 K
2.544 K
254.4 K
25.44 K

Solution :`DELTA T_(f)= "MOLALITY" XX K_(f) = 10 xx 1.86 =18.6`
`Delta T_(f) = T^(@) - T rArr T=0 - 18.6`
`=-18.6^(@) + 273 K = 254.4 K`


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