Question

An unknown elements forms an oxide. What will be the equivalent weight of the element if the oxygen content is 20% by weight?

• A. 16
• B. 32
• C. 8
• D. 64

Answer 1

The correct option is B 32

Given that, oxygen contents in element oxide is 20% by weight.
Hence, element contents in element oxide is 8% by weight.
Then, equivalent weight of unknown element $=\frac{80}{20}\times 8$
$\therefore$ Equivalent weight of unknown element = 32.