Question

Universal indicator imparts orange color to a solution. Predict the pH of a solution.

Answer 1

pH is the measure of the concentration of ${\mathrm{H}}^{+}$ions, and it expresses the acidic or basic nature of the solution.

We know that the pH scale imparts different colors depending on the pH value.

For example,

pH	Color
<3	red
3	yellow
4-6	orange
7	green
8-11	blue
>11	violet

If the pH of the indicator imparts orange color it means the pH of the solution is 4.

Hence, the pH for the given solution that imparts orange color is 4.