下列说法正确的是( )
①氯化钠溶液在电流作用下电离成钠离子和氯离子
②溶于水电离出H＋的化合物都是酸
③BaSO4难溶于水，但BaSO4属于强电解质
④金属铜能导电，但它不是电解质，是非电解质
⑤相同条件下，H＋浓度相同的盐酸和醋酸溶液导电能力基本相同
⑥NaHSO4在熔融状态下电离生成三种离子
| A．②③⑥ | B．①④ | C．③⑤ | D．④⑤ |
相关试题
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— ______ , as a matter of fact
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