What volume of 0.120 M HNO3(aq) is needed to completely neutralize 150.0 milliliters of 0.100 M NaOH(aq)?
(1) 62.5 mL (3) 180. mL
(2) 125 mL (4) 360. mL
HNO3 is a strong acid and NaOH is a strong base. An equal number of moles of each will create a neutral solution. (.1500L)(.100M NaOH) = .01500 moles NaOH, and therefore .015 moles OH- .01500 moles H+ = .01500 moles HNO3 = (.120M HNO3)(volume HNO3) volume HNO3 = .125L HNO3, or 125mL HNO3
