(c)You have four solutions A, B, C and D. The pH of solution A is 6, B is 9, C is 12 and D is 7.State the change in colour of pH paper on dipping in solution C and D.
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Answer:
The colour of the pH paper on dipping in solution C will change to indigo ( purple), because it is basic in nature with pH value = 12.
The colour of the pH paper on dipping in solution D will change to medium green, because it is neutral in nature with pH value = 7.
Explanation:
The more acidic the pH colour will be extending yellow to red.
The more basic the pH colour will be extending blue to deep violet.
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