What was the resulting color and approximate ph of solution, Chemistry

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Why were you able to observe electrolysis in the cabbage juice indicator solution before any vinegar was added to this solution, while no electrolysis was observed in distilled water?

What was the color and approximate pH of the cabbage juice indicator solution when a small amount of vinegar was added? What was the resulting color and approximate pH of the solution after two or three minutes of attempted electrolysis? What does this indicate about the reactions taking place?


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