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?

1 Answer
May 14, 2017


It turns blue


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.