stoichiometry of neutralization

150 mol/l potassium hydroxide and 0.075 mol/l nitric acid. sam added 25.00 ml of potassium hydroxide. he used a ph probe to collect the following data. phenolphthalein indicator, which is clear and colourless in acidic solutions and pink in basic solution, was also added to indicate a colour change when neutralization. what volume of base was required for neutralization to occur? calculate the number of moles of koh required to neutralize the sample of hno3. calculate the number of moles present in 25.00ml of hno3 in the laboratory. write a balanced chemical equation for the reaction using state symbols.