25,18 г                               Х л

    HNO3      +   KOH =     KNO3       +      H2O

                    n = 1 моль                            n = 1 моль

                 Mr = 56 г/моль                       Vm = 22,4 л/моль

                m = 56 г                                  V = 22,4 л

25,18 г КОН     -    Х л Н2О

56 г КОН         -    22,4 л Н2О

V(H2O) = 25,18 * 22,4 / 56 = 10 л