Х г                                                                      224 г  2NaCl      +        H2SO4     =     Na2SO4      +    2HCln = 2 моль                                                            n = 2 мольMr = 58,5 г/моль                                                  Mr = 36 г/мольm = 117 г                                                              m = 72 гХ г NaCl     -    224 г HCl117 г NaCl   -   72 г HClm(NaCl) = 117 * 224 / 72 = 364 г