Exactly 100 ml of 0.15 m nitrous acid (hno2) are titrated with a 0.15 m naoh solution. calculate the ph for the following. (a) the initial solution webassign will check your answer for the correct number of significant figures. 2.10 correct: your answer is correct. (b) the point at which 80 ml of the base has been added webassign will check your answer for the correct number of significant figures. 3.95 correct: your answer is correct. (c) the equivalence point webassign will check your answer for the correct number of significant figures. (d) the point at which 105 ml of the base has been added webassign will check your answer for the correct number of significant figures.