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Standard X

Chemistry

Empirical and Molecular Formula

88.Salts of A...

Question

88.Salts of A ( atomic mass 7 ), B ( atomic mass 27) and C (atomic mass 64) were electrolysed under identical conditions using the same quantity of electricity. It was found that when 2.1 g of A was deposited, the weights of B and C deposited were 2.7 g and 9.6 g. The valencies of A, B and C are respectively : (a) 3, 1 and 2 (b) 1, 3 and 2 (c) 3, 1 and 3 (d) 2, 3 and 2.

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Salts A(atomic weight $7$ ), B(atomic weight $27$ ) and C(atomic weight $48$ ) were electrolysed under identical conditions using the same quantity of electricity. It was found that when $2.1$ g of A was deposited, the weights of B and C deposited were $2.7$ g and $7.2$ g. The valencies of A, B and C are respectively :

Q. Salts of A (atomic weight

=

7), B (atomic weight

=

27) and C (atomic weight

=

48

) were electrolyzed under identical conditions using the same quantity of electricity. It was found that when

2.1

g of A was deposited, the weights of B and C deposited were

2.7

and

7.2

g. The valencies of A, B and C respectively are:

Q. Salts of

A

(atomic mass

15

B

(atomic mass

27

) and

C

(atomic mass

48

) were electrolyzed using the same amount of charge. It was found that when

4.5 g

A

was deposited, the mass of

B

and

C

deposited were

2.7 g

and

9.6 g

. The valencies of

A

B

and

C

respectively.

Salts of A (atomic mass 15), B (atomic mass 27) and C (atomic mass 48) were electrolyzed using the same amount of charge. It was found that when 4.5 g of A was deposited, the masses of B and C deposited were 2.7 g and 9.6 g. The valences of A, B and C were respectively

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