Assume that 30.0 ml of a 0.10 m solution of a weak base b that accepts one proton is titrated with a 0.10 m solution of a monoprotic strong acid hx. (a) how many moles of hx have been added at the equivalence point? (b) what is the predominant form of b at the equivalence point? (c) what factor determines the ph at the equivalence point? (d) which indicator, phenolphthalein or methyl red, is likely to be the better choice for this titration?