1.

Twoelements A and B form compounds having formula AB2and AB4.When dissolved in 20 g of benzene (C6H6),1 g of AB2lowers the freezing point by 2.3 Kwhereas 1.0 g of AB4lowers it by 1.3 K.The molar depression constant for benzene is 5.1 Kkg mol−1.Calculate atomic masses of A and B.

Answer»

Two
elements A and B form compounds having formula AB2
and AB4.
When dissolved in 20 g of benzene (C6H6),
1 g of AB2
lowers the freezing point by 2.3 Kwhereas 1.0 g of AB4
lowers it by 1.3 K.
The molar depression constant for benzene is 5.1 Kkg mol−1.
Calculate atomic masses of A and B.



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