Question

1.50 g of a metal on being heated in oxygen gives
2.15 g of its oxide. Calculate the equivalent mass of
the metal.
[Ans. 18.46]​

Answer 1

Given:

1.50 g of a metal on being heated in oxygen gives 2.15 g of its oxide.  

To find:

Calculate the equivalent mass of the metal.

Solution:

From given, we have,

The weight of a metal = 1.5 g

The weight of oxide formed when a metal is being heated in oxygen = 2.15 g

∴ The weight of oxygen = (2.15 - 1.5) = 0.65 g

0.65 g of oxygen combines with 1.5 g of elements.

8g of oxygen combines with (1.5/0.65) × 8g = 2.3076 × 8g = 18.46 g

Therefore, the equivalent mass of the metal is 18.46 g