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Ratio of (DeltaT(b))/(K(b)) of 10 g AB(2...

Ratio of `(DeltaT_(b))/(K_(b))` of 10 g `AB_(2)` and 14g `A_(2)B` per 100 g of solvent in their respective, solution (`AB_(2)` and `A_(2)B` both are non-electrolytes) is 1 mol/kg in both cases. Hence, atomic wt. of A and B are respectively.

A

100,40

B

60,20

C

20,60

D

None of these

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The correct Answer is:
B
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Ratio of DeltaT_(b)//K_(b) of 6% AB_(2) and 9% A_(2)BAB_(2) and A_(2)B both are non-electrolytes is 1 mol/kg in both cases. Hence atomic masses of A and B are respetively.

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Suppose that A and B form the compounds B_(2)A_(3) and B_(2)A if 0.05 mole of B_(2)A_(3) weighs 9 g and 0.1 mole of B_(2)A weighs 10 g, the atomic weight of A and B respectively are

Two substance A_(2)(g) and B_(2)(g) are allowed to react to form either of A_(2)B_(2)(l), A_(2)B_(4)(g) or both depending on relative amount. Answer the following the following question, if 75 g A_(2) and 200g B_(2) are mixed and no reactant is left. [Given :At mass of A =25 , B=50] What is the volume of all the gases present in the mixture after completion of reaction at 760 mm of Hg and 273^(@) C?

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