Question

In a metal oxide, there is $20\%$ oxygen by mass. Its equivalent mass is:-

• A. $40$
• B. $64$
• C. $80$
• D. $32$

Answer 1

The correct option is D $32$

Given : In a metal oxide, there is 20%20% oxygen by mass. Its equivalent mass is:-

Solution :

$O_2$% = 20 %

Metal % = 80%

Mass of metal / Mass of $O_2$ = Equivalent weight of metal/ equivalent weight of$O_2$

$\frac{80}{20}=\frac{x}{8}$

x = 32 = Equivalent mass of metal

The Correct Opt = D