Q.

A compound of hydrogen with another element was found to contain 1.25% hydrogen. Calculate the equivalent weight of the element.

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answer is 79.63.

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Detailed Solution

Wt. of H2=1.25g; weight of element =100-1.25=98.75gWe know that:  wt. of element  wt. of H2= Eq. wt. of element  Eq. wt. of H2(=1.008);98.75g1.25g= Eq. wt. of element 1.008.∴ Eq. wt. of element =98.75×1.0081.25=79.63 Ans.
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