Question

what is disproportionation???

Answer 1

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Answer 2

chem right?

Answer 3

right

Answer 4

Disproportionation, also known as dismutation is used to describe a specific type of redox reaction in which a species is simultaneously reduced and oxidized so as to form two different products.

For example: the UV photolysis of mercury(I) chloride Hg2Cl2 → Hg + HgCl2 is a disproportionation since mercury (I) is both reduced to mercury (0) and oxidized to mercury (II). A similar type of reaction, but in which no element changes oxidation number, is the acid-base disproportionation reaction observed when an amphiprotic species reacts with itself. Two common examples for conjugated bases of polyprotic acids such as bicarbonate and dihydrogenophosphate are respectively:

HCO3- + HCO3- → CO32- + H2CO3
H2PO4- + H2PO4- → HPO42- + H3PO4
(the oxidation numbers remain constant in these acid-base reactions: O = 2-, H = 1+, C = 4+, P = 5+). This is also called autoionization.

The reverse of disproportionation, when a compound in an intermediate oxidation state is formed from compounds in lower and higher oxidation states, is called comproportionation.