Answer to Question #111407 in General Chemistry for Radiah Jamil

Question

Suppose that 12.4 mL of HNO3 is neutralized
by 83.7 mL of a 0.0034 M solution of KOH
in a titration. Calculate the concentration of
the HNO3 solution.
Answer in units of M. (HNO3 with the 3 on the bottom)

Answer 1

KOH and HNO3 react in 1:1 mol ratio. You can use equation:

M1V1 = M2V2

M1*12.4 = 0.0033 * 83.7

M1 = 0.02295

Answer: Molarity of HNO3 = 0.023 M