Question

If a solution changes the color of litmus from red to blue, what can you say about its pH value/less than 7 or greater than 7?

Answer 1

pH stands for the potential of hydrogen. It measures the concentration of hydrogen ions present in an aqueous solution.

1. If a solution changes the colour of litmus from red to blue, the solution will be basic in nature.
2. If a solution changes the colour of litmus from blue to red, the solution will be acidic in nature.

Here, the given colour change is from red to blue which displays a basic solution. The pH value for a basic solution is more than 7 and for an acidic solution is less than 7.

Hence, the solution will have a pH greater than 7.