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When a metal burnt its weight inceases by 24% , the equivalent weight will be 1) 24 2) 100/3 3) 25 4) 8?
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When a metal burnt its weight inceases by 24% , the equivalent weight ...
Equivalent weight of O2-(oxide) ion is : Molar mass of oxygen/charge on oxygen
= 16 g mol-1 /2 mol eq-1
= 8 g eq-1
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 M grams 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. 
Or we can say that M x 24/100 = 8 gram
So, M = 100 x 8/24 = 33.33 g
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When a metal burnt its weight inceases by 24% , the equivalent weight will be 1) 24 2) 100/3 3) 25 4) 8?
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