Question

compare the acidic feature between 1-butanol,2-butanol, tertiary butanol

Answer 1

primary alcohol>secondary>tertiary(acidity order)
so here,1-butanol>2-butanol>tertiary butanol(acidic order)

If you are asking for reason,then as electron donating group increases polarity of O-H bond decreases.Decrease in polarity of O-H bond decreases acidity.

As tertiary alcohol has highest electron donating group so it will be the less acidic.

Thanks.
Tripathy.