Question

Two substances 1 and 2 of carbon and oxygen have respectively 72.73% and 47.06% oxygen. Hence they follow
(a) Law of conservation of mass
(b) Law of definite proportions
(c)Law of reciprocal proportions
(d) Law of multiple proportions

Explain.... ​

Answer 1

Answer:

mark as BRAINLEST

Explanation:

Correct option is

C

Law of multiple proportion

The above example illustrates the law of multiple proportions:

If carbon constitutes 42.9% then Oxygen constitutes 57.1%(100−42.7)

Then, 1 gram of oxygen constitutes

57.1

42.9

=0.79 gram of carbon.

In the second compound, oxygen constitutes 72.3 gram (100−27.3)

Then 1 gm of oxygen constitutes

7207

27.3

=0.375 gram of carbon.

The ratio of carbon combining in two compounds with a fixed weight of oxygen is 0.79:0.375 is 2:1. (simple ratio)

Hence, option C is correct.

Answer 2

Two substances 1 and 2 of carbon and oxygen have respectively 72.73% and 47.06% oxygen. Hence they follow

(a) Law of conservation of mass

(b) Law of definite proportions

(c)Law of reciprocal proportions

(d) Law of multiple proportions ✓✓

EXPLANATION

In the first oxide, 57.1 part by mass of oxygen with 42.9 parts by mass of carbon

• 1 part oxygen combine with carbon=42.9/57.1=0.751

In the second oxide contains oxygen72.7 parts with 27.3 parts carbon

• One part oxygen combines with carbon =27.3/72.7=0.376

The ratio of the masses of carbon that combine with the same mass oxygen is = 0.751:0.376 Or 2:1,

Since this is a simple whole numbers ratio, so the above data illustrate the law of multiple proportions.