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Redox Reactions

Question

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Compute the oxidation number of Co in [CO(NH₃)₅Br] $SO subscript 4 superscript negative 2 end superscript$

Solution

Let the oxidation number of Co =x
Writing the oxidation number of each atom at the top of its symbol,
x 0 -1
[CO(NH₃)₅Br] $SO subscript 4 superscript negative 2 end superscript$
The algebraic sum of the oxidation number of various atoms = 0
x + 5 (0) - 1 =+2(anions charge)
x-1=2
x=3

Some More Questions From Redox Reactions Chapter

Can oxidation occur without reduction?

What are redox reactions?

What are direct redox reactions? Give one example.

What are indirect redox reactions?

Write formulas for the following compounds:
(a) Mercury (II) chloride
(b) Nickel (II) sulphate
(c) Tin (IV) oxide
(d) Thallium (I) sulphate
(e) Iron (III) sulphate
(f) Chromium (III) oxide

What are electrolytes?

What are cations and anions?

What is electrolysis?

Mention two uses of electrolysis.

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