The yellow color of an aqueous solution of K2CrO4 changes to red-orange upon the addition of a few drops of HCl. The red-orange complex, the oxidation state of its central element(s), and the origin of its color, respectively, are:

Question

The yellow color of an aqueous solution of K2CrO4 changes to red-orange upon the addition of a few drops of HCl. The red-orange complex, the oxidation state of its central element(s), and the origin of its color, respectively, are:

TuteeHUB · Accepted Answer

perchlorate ion, +7, charge transfer

TuteeHUB · Answer

chromium chloride, +3, d-d transition

TuteeHUB · Answer

dichromate ion, +6 and +6, charge transfer

TuteeHUB · Answer

chromic acid, +6, charge transfer

1.	The yellow color of an aqueous solution of K2CrO4 changes to red-orange upon the addition of a few drops of HCl. The red-orange complex, the oxidation state of its central element(s), and the origin of its color, respectively, are:
A.	chromium chloride, +3, d-d transition
B.	dichromate ion, +6 and +6, charge transfer
C.	perchlorate ion, +7, charge transfer
D.	chromic acid, +6, charge transfer
Answer» C. perchlorate ion, +7, charge transfer

The yellow color of an aqueous solution of K2CrO4 changes to red-orange upon the addition of a few drops of HCl. The red-orange complex, the oxidation state of its central element(s), and the origin of its color, respectively, are:

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