Is CsOH a strong base

Answer 1

Yes. One of the guidelines, per my general chemistry textbook, for determining if bases are strong is as follows:

1. M2O or MOH where M is a Group 1A metal (Li, Na, K Rb, Cs) or
2. MO or M(OH)2 where M is a Group 2A metal (Ca, Sr, Ba)

CsOH fits the pattern for the first guideline, and so is a strong base and dissociates almost completely in water.