MCQ
KMnO4 and K2Cr2O7 are _____agents and Na2S2O7 is ______ agent.
- AReducing, oxydising.
- BOxydising, reducing.
- CReducing, reducing.
- DOxydising, oxydising.
✓
Answer
- Oxydising, reducing.
Explanation:
An oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances (cause them to lose electrons).
KMnO4, K2Cr2O7 are oxidizing agent.
A reducing agent (also called a reductant or reducer) is an element (such as calcium) or compound that loses (or "donates") an electron to another chemical species in a redox chemical reaction. Since the reducing agent is losing electrons, it is said to have been oxidized.
Na2S2O3 is a reducing agent.
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