Question

In a metal oxide, there is 20% oxygen by weight. Its equivalent weight is.

• A. 40
• B. 64
• C. 72
• D. 32

Answer 1

Answer: (D)

32

Answer 2

$O_{2}\% = 20\%$

$\text{Metal}\% = 80\%$ $= \frac{80}{20} \times 8 = 32g\text{ofmetal}$.