Question

13. If Ca3(Po4)2 and H3PO3
contains same number
of 'P' atoms then the ratio of oxygen atoms in these
compounds respectively is:
(B)2/13​

Answer 1

Explanation:

1mole H3PO3 contains 1mole of P.

1mole Ca3(PO4)2 contains 2 mole P.

As the number of P atoms is same, Ca3(PO4)2 must be 1/2mole.

Ratio of Oxygen=(4x1/2x2)/3=4/3.

Answer 2

Answer:

4/3 will be the answer

Explanation:

In first,

2P ⇒ 8O

1P  ⇒ 4O

Now, in second, 3O are there, so:-

4/3