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0.548 g of the metal reacts with dilute ...

0.548 g of the metal reacts with dilute acid and liberates 0.0198 g of hydrogen at S.T.P. Calculate the equivalent mass of the metal.

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0.548 g of the metal displaces 0.0198 g of hydrogen
The mass of the metal which will displace
1.008 g of hydrogen ` = (1.008 xx 0.548)/( 0.0198)g` of metal
The equivalent mass of the metal `=27.90 g "equiv"^(-1)` .
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