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Your question seems to be unclear, as you have not mentioned your query. So, I am assuming that you want explanation for the topic- 'Equivalent mass of an element in a redox change'. If you still have any doubts regarding this topic, then we request you to please repost your question with complete information regarding it. So, that our experts can help you in a better way.
Please find below the explanation of the topic:
Equivalent mass of a substance (oxidant or reductant) is equal to molecular weight divided by number of electrons lost or gained by one molecule of the substance in a redox reaction.
Eq. wt. of O. A. =
=
Eq. wt. of R. A. =
=
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