Preparation of potassium dichromate explanation
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Potassium dichromate is usuallyprepared by the reaction of potassiumchloride on sodium dichromate. Alternatively, it can be obtained frompotassium chromate by roasting chrome ore with potassium hydroxide. It is soluble in water and in the dissolution process it ionizes: K2Cr2O7→ 2 K+ + Cr2O.
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Answer:
K2Cr2O7
Explanation:
The oxidation number of chromium in potassium dichromate is +6
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