Question

$24$ g of magnesium combines with oxygen forming $40$ g of oxide. The equivalent weight of magnesium is :

Answer 1

According to given conditions,
Mass of magnesium$=24$ g.
Mass of oxide $=40$ g.
Oxygen combined$=40-24=16$ g.
$16$ g of oxygen$=24$ g magnesium.
$\therefore 8$ g oxygen$=\frac{24}{16}\times 8=12$ g.
$\therefore$ Equivalent weight of $Mg=12$ g.