JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Hard

1 of 1

Application +4 | -1

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 \mathrm{~g}

and 0.1 mole of

B_2 A

weighs

10 \mathrm{~g}

, the atomic weight of

A

and

B

respectively are

View answer and explanation

Correct option: B

40 and 30

Option B (40 and 30) is correct because solving the system of equations derived from the molar masses of the compounds yields these atomic weights.

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