Suppose a student added NaOH solution from the buret drop by drop until reaching the equilibrium point. Instead of closing the stopcock, he mistakenly opened it wide but then immediately switched it off. Check all the possible effects.
Too much NaOH will flow into the flask.
The solution will turn from pink to blue.
The moles of NaOH will be greater than needed.
The computed HCl concentration will be greater than in actuality.