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Grade: 12th pass

                        

Why K2Cr2O7 shows yellow colour............​???????????????

28 days ago

Answers : (1)

Pawan Prajapati
askIITians Faculty
1683 Points
							Answer:

The color change depends on the changes in the pH of the solution. Dichromate salts contain the dichromate anion, Cr2O72- and chromate salts contain chromate anion, CrO42−. When an alkali is added to an orange red solution of dichromate, an yellow solution is obtained due to the formation of chromate ions.

Thanks
28 days ago
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