Question: how many ml of 0.10 m naoh would be required to neutralize it?
Answer: 6 =9 milliequivalents (mEq) of acid . Hence we will need 9 mEq of a base for a complete neutralization ,and we must get them from a 0.1N NAOH solution. Since 1 ml of this base solution contains 0.1 mEq, 9/0.1 =90 ml are needed.