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20.0 mL of nitric acid (HNO3) solution is neutralized with 30.0 mL 0.10M of potassium hydroxide...

20.0 mL of nitric acid (HNO3) solution is neutralized with 30.0 mL 0.10M of potassium hydroxide (KOH) solution. what is the concentration of nitric acid solution? The answer is 0.67 M but how do you get that?

Solutions

Expert Solution

   KOH + HNO3 -------> KNO3 + H2O

1 mole    1 mole

HNO3                                                                          KOH

M1 =                                                                          M2 = 0.1M

V1 = 20ml                                                                   V2 = 30ml

n1 = 1                                                                         n2 = 1

                   M1V1/n1    =    M2V2/n2

                      M1         = M2V2n1/V1n2

                                  = 0.1*30*1/20*1   = 0.15M >>>> answer


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