(iv) Consider this reaction: 3Au(s)
+8H+ + 2NO3-→ 3Auz+(aq) + 2NO
(g) + 4H2O(1)
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The oxidation number of fluorine in a compound is always −1. ... + 8H. + → 3Cu2+ + 2NO + 4H2O. +5 −2. +1. +2 −2 +1 −2. 2NO3. − + 6e ... H2(g) + CuO(s) → Cu(s) + H2O(l) c.
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In this reaction:
3Au(s)++2NO3-->3Au+ +2NO(g)+4H2O
- Au(gold) is oxidized to Au+
- N(nitrogen) is getting reduced from oxidation number +3 to +1
- Hence, it is a redox reaction where Reducing Agent is Gold and Oxidising Agent is Nitrogen.
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