Question

If solution contains 0.85 mol of OH, how many moles of H+ would be required to reach the equivalence point in a titration?

Answer 1

It is simple reaction i.e.

OH- + H+ → H2O

one mole of hydroxyl ion will react with one mole of proton to produce one mole of water.

So, if solution contain 0.85 mol of OH- then it will need 0.85 H+ to neutralize all of the hydroxyl ion in order to reach equivalence.