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Equivalent mass of Na2S2O3-158.Worked Out ExamplesExample 37. Approximate atomic mass of an elementis 26.89. If its equivalent weight is 8.9, find the exact atomicmass of the element.

Answer»

Equivalent weight = atomic weight/ valency

Therefore, valency = 26.89/8.9

= 2.99 or 3

Exact atomic weight = equib=valent weight x valency

= 8.9 x 3

= 26.7 g

Thus the exact atomic weight = 26.7 gm.

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