Identify the disproportionation reaction. h2po4– + h2po4– mc001-1.jpg hpo42– + h3po4 2agno3(aq) + cu(s) mc001-2.jpg 2ag(s) + cu(no3)2(aq) oh– + h+ mc001-3.jpg h2o

Answer : The correct option is,

Explanation :

Disproportionation reaction : It is a chemical reaction in which a molecule is converted or transformed into two or more different products.

It is type of redox reaction where a species simultaneously oxidized and reduced and form different products.

From the given options, only one option shows the disproportionation reaction which is:

In this reaction, oxidation and reduction reaction takes palace simultaneously by the one species that is, .

In this reaction, oxidation takes place when lose electrons and form and reduction takes place when gain electrons and form .

Hence, the correct option is,

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

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