Potassium dichromate and sodium hydroxide equation
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Explanation:
potassium dichromate is K2Cr2O7 and sodium hydroxide is NaOh
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solution of potassium dichromate is made basic with sodium hydroxide; the color changes from red to yellow. Addition of silver nitrate to the yellow solution gives a precipitate. This precipitate dissolves in concentrated ammonia but re-forms when nitric acid is added
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