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when acidified k2cr2o7 solution is added to na2s solution, green cr3 ions and free s are formed. when acidified k2cr2o7 solution is added to nacl, no change occurs. of the substances involved in these reactions, which is the best reducing agent?

Answer :

The best reducing agent is Na2S.

What is reducing agent?

A chemical species known as a reducing agent in chemistry "donates" an electron to an electron acceptor. The Earth metals, formic acid, oxalic acid, and sulfite compounds are a few examples of chemicals that are frequently used as reducing agents.

A material that induces oxidation by receiving electrons becomes reduced when it acts as an oxidising agent. A chemical that reduces something by gaining electrons is said to be an oxidising agent. There are examples of how to recognise oxidising and reducing agents.

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