Question

A beaker contains 38.0 mL of 0.600 M NaOH solution. A few drops of litmus is added to the solution. What is the color of the solution?

Answer 1

It turns blue

Explanation:

The concentration of `OH^-` ions in the solution is `0.600 M`.
The pH can be calculated by taking the negative of the logarithm of `0.600` and subtracting the result from `14.00`:

`pH = 14 - (-log(0.600)) = 13.78`

which indicates a strongly basic solution, and since litmus turns blue in the presence of a basic solution, the solution will turn blue when the litmus is added.