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What are the oxidation number of the und...

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
a.`Kul(I)_(3)` b. `H_(2)ul(S)_(4)O_(6)` c. `ul(Fe)_(3)O_(4)`
d. `ul(C )H_(3)ul(C )H_(2)OH`
e. `ul(C )H_(3)ul(C )OOH`

Text Solution

Verified by Experts

(a) `KI_(3) rarr +1 + 3(x) = 0`
`:.` x = -`1//3`
(b) `H_(2)S_(4)O_(6) rarr 2(+1) + 4(x) +6(-2) = 0`
`rarr ` 4x – 10 = 0 `rarr x = 10//4`
(c) `Fe_(3)O_(4) rarr 3(x) + 4(-2) = 0 `
`:. ` x = `+8//3`
(d)`CH_(3)CH_(2)OH rarr 2x + 6(+1) + 1(-2) =0 `
`rarr` 2x + 4 = 0 `rarr` 2x = -4
So, sum of O.S. of both carbon atoms is –4.
Oxidation number of c – 1 = -3
Oxidation number of c – 2 = - 1 (e) `CH_(3)COOH rarr 2x +4 – 4 = 0 `
`2x = 0 ` `rarr` x = 0
So, sum of oxidation states of both carbon atoms is zero.
Oxidation number of c – 1 = -3
Oxidation number of c – 2 = +3
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