Homework Help: chem

Posted by Joyce on Wednesday, April 29, 2009 at 9:08pm.

A solution of Acetic acid has a light red color in the presense of the indicator orange IV. When sodium acetate is added to the solution, the color changes to yellow. Explain the reaction which causes the color change.

I have no idea. Does it have to do with the sodium added? I don't understand. Help please!

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