Question

what do you mean by equivalent weight of magnesium is 12?
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Answer 1

The equivalent mass of Mg is 12 means:

i) 12 P/m of magnesium displaces

1.008 P/m of hydrogen from dilute acid.

ii) 12 P/m of magnesium combines with 8 P/m of oxygen and 35.5 P/m of chlorine.