Question

Two gaseous samples were analysed. One contained
1.2 g of carbon and 3.2 g of oxygen. The other
contained 27.3% carbon and 72.7% oxygen. The
experimental data are in accordance with
(1) Law of conservation of mass
(2) Law of definite proportions
(3) Law of reciprocal proportions
(4) Law of multiple proportions​

Answer 1

Answer:

Law of definite proportions

Explanation:

Answer 2

The experimental data are in accordance with (2) Law of definite proportions.

Given - Mass and percentage of carbon and oxygen

Find - Which law is followed.

Solution - Taking first case -

Total mass of substance = 1.2 + 3.2

Total mass of substance = 4.4 gram

Percentage of carbon = $\frac{1.2}{4.4} \times 100$

Percentage of carbon = 27.2%

Percentage of oxygen = $\frac{3.2}{4.4} \times 100$

Percentage of oxygen = 72.7%

The second case has same proportion of elements. Hence, samples follow (2) Law of definite proportions.

#SPJ3