Question

Two elements A and B combine to form compound X and Y for fixed mass of A masses of B combined for compound X and Y are in 1/2 ratio. If in compound X, 2gm of A combine with 16 gm of B, then in compound Y, 4gm of A combine with gm of B​

Answer 1

Answer:

Step-by-step explanation:

Correct

56

Mass of A is fixed

Mass =12 gm

g=  

3

12

​

=4 gm

∴4 gm A combines with 4 gm B

A:B

48 m:7×4

49 m:23 gm B

∴ For 8 gmA→28×2

56 gm B

​

 

∴ For 8 gm of A will combine with 56 gm of B

Answer is  (56)

Answer 2

Given: Two elements A and B combine to form compound X and Y for fixed mass of A and B. Masses of B combined for compound X and Y are in 1/2 ratio. In compound X, 2 gm of A combine with 16 gm of B.

To find: Im compound Y, 4 gm of A combine with how many gm of B

Explanation: Law of definite proportions states that any compound will have the same proportion of elements by mass. It does not depend on the source of preparation.

In compound X, Mass of A= 2 g

Mass of B = 16 g

Ratio of mass of A and B respectively

= 2 : 16

= 1:8 ( dividing by 2)

Therefore, in Y the ratio of masses should be 1:8 by law of definite proportions.

In compound Y, Mass of A = 4 g

Now, let mass of B be m.

$\frac{4}{m} = \frac{1}{8}$

=>m= 4×8

=> m = 32 g

Clearly, the masses of B in compound X and Y is also in ratio 1/2 as given in question.

Therefore, mass of B in compound Y is 32 grams(g).