Question

when a metal is burnt in oxygen it's weight is increase by 24 percentage the equivalent weight of metal is how much

Answer 1

Equivalent weight of O2-(oxide) ion is : Molar mass of oxygen/charge on oxygen

= 16 g

= 8 g per mole

One equivalent of the metal reacts with one equivalent of oxygen to form metal oxide.

Let M be the equivalent weight of the metal.

Therefore Mgrams of the metal will react with 8g of oxygen. The corresponding metal oxide will have mass 8 gram more than mass of metal M. This 8 gram is 24% of M.

So, m*24/100=8

m=300g

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