高中化学必修二化学金属冶炼 几道高中化学关于金属冶炼的题目
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不完全是，要分电解的是离子键还是共价键，
活泼的金属确实是不易得电子，因为他们的还原性太强
氯化铝不能电解是因为它是共价化合物，液态时不能导电
冶炼铁用还原法是因为它相对于钠镁铝来讲活动性较弱，用还原法就可以（电解法可是相当耗能的，成本高）
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