Question

A metal oxide mo contain 40 oxygen .The equivalent weight of metal is

Answer 1

Answer:

Question

If a metallic oxide has 40% oxygen, find the equivalent weight of the metal.

This amounts to finding the atomic weight of the metal and the charge on the cation (in effect identifying the metal itself).

I didn't know how to do this, so I looked up the solution. It goes as follows.

Solution

Assume the oxide has the formula MO. Let the atomic weight of M be x Then

16x+16=40100

Simplifying and solving for x yields

x=24

Thus the metal is magnesium and the equivalent weight is 12.