Question

10 g of a metal (M) reacts with oxygen to form 11.6 g of oxide. What is the equivalent weight of \( M \)?

• A. \( 50 \) g
• B. \( 0.02 \)
• C. \( 0.02 \) g
• D. \( 50 \)

Hint:

Equivalent weight can be found using the relation \( E = \frac{\text{Mass of metal}}{\text{Mass of oxygen}} \times 8 \).

Answer 1

The Correct Option is D

Step 1: Oxygen Mass Mass of oxygen in metal oxide: \[ \text{Mass of oxygen} = 11.6 - 10 = 1.6 \text{ g} \]
Step 2: Equivalent Weight Formula \[ \text{Equivalent weight} = \frac{\text{Mass of metal}}{\text{Mass of oxygen}} \times 8 \] \[ = \frac{10}{1.6} \times 8 = 50 \]