Asked Nov 25, 2019

Which reaction is a redox reaction? Please explain why..

A) KOH(aq) + HNO3(aq) --> KNO3(aq) + H2O(l)

B) Ca(OH)2(aq) + 2HNO3(aq) --> 2H2O(l) + Ca(NO3)2(aq)

C) 2Al(s) + 3Br2(l) --> 2AlBr3(s)

D) AgNO3(aq) + KCl(aq) --> AgCl(s) + KNO3(aq)


Expert Answer

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Step 1

The reaction in which both oxidation and reduction reaction occur simultaneously is called a redox reaction. The decrease in oxidation number is called reduction reaction while the increase in the oxidation number is called oxidation reaction.

Step 2

The reaction that behaves as a redox reaction is as follows:


Image Transcriptionclose

2Al(s)+3Br,()2AIB (s)

Step 3

In this reaction, Al undergoes oxidation, whereas Br undergoes reduction. The oxidation state of Al on reactant side is 0, ...

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