Q44. Two elements ‘A’ and ‘B’ form compounds having formulae AB2 and AB4 . When dissolved in 20 g of

Описание к видео Q44. Two elements ‘A’ and ‘B’ form compounds having formulae AB2 and AB4 . When dissolved in 20 g of

Ch13. Q44. Two elements ‘A’ and ‘B’ form compounds having formulae AB2 and AB4 . When dissolved in 20 g of benzene, 1 g of AB2 lowers the freezing point by 2.3°C whereas 1 g of AB4 lowers the freezing point by 1.3°C. Calculate the atomic weights of A and B. (Kf for benzene = 5.1°C m‾1 )



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