写出下列物质电离或盐水解的离子方程式：
(1)NaHSO₄溶于水_______________________________________________________
(2) H₂S的电离________________________________________________________ 
(3)氯化铁溶液：                                                      ；
(4)碳酸钠溶液：                                                        ；
(5)AlCl₃与NaHCO₃混合____________________________________________________