(1)反应后的溶液组成: C(HCOOH)==C(HCOONa)==C(NaCI) PH < 7(2)HCOOH == HCOO- + H+-----------(可逆)---(主) HCOO- + H2O == HCOOH + OH-----(可逆)---(次) H2O == H+ + OH----------------(可逆)---(次)(3)[Na+] 〉[HCOO-] 〉[CI-] > [HCOOH] 〉[H+] 〉[OH-]