题目

(6分)写出下列反应的离子方程式    (1)C12与H2O反应                                                               (2)稀H2SO4与Ba(OH)2溶液反应                                                  (3)NaHCO3溶液中滴入少量澄清石灰水                                         答案：       (1)    (2)    (3)

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