Potassium dichromate solution

If Potassium dichromate was in solution with chromate ions and silver nitrate was added.
A precipitate would be apparent,if the precipitate colour was yellow,would it be because of the chromate? And if it was orange,be because of the dichromate?
Are hydrogen ions increased or decreased?
I thought because no alkaline or acid was added/present,the hydrogen would stay the same.
Any help appreciated.

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I think the yellow is the chromate ions.
But I`m confused on whether the concentration of H+ Aq increases/decreases and if the pH of the solution changes.
thank`s.

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