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Redox Reactions

Short Answer Type

111.

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
$straight K bottom enclose straight I subscript 3$

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112.

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
$straight H subscript 2 bottom enclose straight S subscript 4 end enclose straight O subscript 6$

108 Views

113.

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
$bottom enclose Fe subscript 3 end enclose straight O subscript 4$

98 Views

114.

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?

$bold space bold space bottom enclose bold C bold H subscript bold 3 bottom enclose bold C bold H subscript bold 2 bold OH$

121 Views

115.

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
$bottom enclose straight C straight H subscript 3 bottom enclose straight C OOH$

130 Views

Long Answer Type

116.

Calculate the oxidation number of sulphur, chromium and nitrogen in H₂SO₅, $space space Cr subscript 2 straight O subscript 7 superscript 2 minus end superscript$ and $space space NO subscript 3 superscript minus$ Suggest structure of these compounds. Count for the fallacy.

695 Views

Short Answer Type

117. Calculate the oxidation number of Fe in K₄|Fe(CN)₆|.

228 Views

Long Answer Type

118.

Calculate the oxidation number of:
(i) Cr in dichromate ion
(ii) Mn in manganate ion
(iii) S in tetrathionate ion.

141 Views

119.
Compute the oxidation number of:
(i) Ni in |Ni(Fe(C₂O₄)₃|
(ii) Fe in K₃|Fe(C₂O₄)₃|

(i) Let the oxidation number of Ni = x
Writing the oxidation number of each atom at the top of its symbol.
x 0
[Ni (CO)₄]

The algebraic sum of the oxidation number of various atoms = 0

x + 4(0) = 0
x = 0

(ii) Let the oxidation number of Fe = x
Writing the oxidation number of each atom at the top of its symbol,

+1 x - 2
K₃ [Fe(C₂O₄)₃]

The algebraic sum of the oxidation number of various atoms = 0
3(+1) + x + 3(-2) = 0
3 + x - 6 = 0