What is the freezing point of a solution containing 8.1 g HBr in 100 g water, assuming that the acid to be 90% ionized K f H 2 O = 1.86 Kkgmo l - 1 .

Question

What is the freezing point of a solution containing 8.1 g HBr in 100 g water, assuming that the acid to be 90% ionized K f H 2 O = 1.86 Kkgmo l - 1 ., 0.85 ° C, + 3.53 ° C, 0 ° C, - 3.5 ° C

MARKS App · Accepted Answer

HBr → H + + Br − i = 1 − α +n x n = 2 i = 1 + α ΔΤ g = i kg × m ΔΤ g = 1 − α 1 .86 × 8 .1 81 × 1000 100 ΔΤ g = 1 + 9 × 1 .86 × 8 .1 81 × 10 ΔΤ g = 3 .56 T g o = 0 ° C ΔΤ g = T g o − T g T g = - 3 .534 ° C

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