Question

What will be the change in color observed with universal indicator when it is added to
Concentrated solution of sodium hydroxide ​

Answer 1

Answer:

As NaOH is added, the solution would become blue (pH 8 - 11) and then purple (pH 13 – 14). Because the water was neutral to start with, as more OH– ions are added, the solution becomes more basic as the OH– ions are immediately in excess.

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