Are all combination reactions also redox reactions?

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Are all combination reactions also redox reactions?

If not, please give an example. Thanks!

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Answer 1 · 2017-12-27T06:54:43

Nope .

Not all combination reactions are redox , some are however , like
$3 F e + 20_{2} \to F e_{3} O_{4}$ $3Fe + 20_2 -> Fe_3O_4$
oxidation number of iron changed from 0 to $2 & 3$ $2 & 3$ and for oxygen it changed from $0$ $0$ to $- 2$ $-2$

but others are not

$C a O + H_{2} O \to C a {(O H)}_{2}$ $CaO + H_2O -> Ca (OH)_2$
oxidation numbers of each element remain constant .
$C a \to + 2$ $Ca->+2$
$H \to + 1$ $H->+1$
$O \to - 2$ $O->-2$

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Are all combination reactions also redox reactions?

If not, please give an example. Thanks!

1 Answer

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