Question

0.5g of a metal on treatment with an acid gave 224ml of H2 gas at NTP.The equivalent mass of metal is​

Answer 1

answer : 25g

explanation : 0.5g of a metal on treatment with an acid gave 224ml of H2 gas at NTP. we have to find equivalent mass of metal.

here, equivalents of metal = equivalents of hydrogen.

or, given mass of metal/equivalent mass of metal = given volume of hydrogen/equivalent volume of hydrogen.

we know,

equivalent volume of hydrogen gas = 11200ml [ it is because , n-factor hydrogen gas , H2 = 2 , so equivalent volume = molar volume at NTP/2 = 11200ml]

and given mass of metal = 0.5g

so, 0.5g/equivalent mass of metal = 224ml/11200ml

or, equivalent mass of metal = 0.5 × 11200/224 = 25g

Answer 2

Answer:

25g is the equivalent mass of the element

Explanation: