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> 某溶液中可能含有Na +、NH 4 +、Ba 2+、SO 4 2-、I -、S 2-．分别取样：①用pH计测试，溶液显弱酸性；②加氯水和淀粉无明显现象．为确定该溶液的组成，还需检验的离子是（　　） A．Na+ B．SO42- C．Ba2+ D．NH4+

问题：

发布时间：2024-09-12

某溶液中可能含有Na ⁺、NH ₄ ⁺、Ba ²⁺、SO ₄ ^2-、I ^-、S ^2-．分别取样：①用pH计测试，溶液显弱酸性；②加氯水和淀粉无明显现象．为确定该溶液的组成，还需检验的离子是（　　）

A．Na⁺ B．SO₄^2- C．Ba²⁺ D．NH₄⁺

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某溶液中可能含有Na +、NH 4 +、Ba 2+、SO 4 2-、I -、S 2-．分别取样：①用pH计测试，溶液显弱酸性；②加氯水和淀粉无明显现象．为确定该溶液的组成，还需检验的离子是（ ） A．Na+ B．SO42- C．Ba2+ D．NH4+

可能感兴趣的题目：

某溶液中可能含有Na ⁺、NH ₄ ⁺、Ba ²⁺、SO ₄ ^2-、I ^-、S ^2-．分别取样：①用pH计测试，溶液显弱酸性；②加氯水和淀粉无明显现象．为确定该溶液的组成，还需检验的离子是（　　）

A．Na⁺ B．SO₄^2- C．Ba²⁺ D．NH₄⁺