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初中化学:常见气体性质、制取与多彩用途全面总结
反应物:高锰酸钾(KMnO4)加热生成氧气。 反应物:锌与稀硫酸的反应。 反应物:碳酸钙与盐酸的反应。 主要反应式:CaCO3 + 2HCl → CaCl2 + H2O + CO2↑ 发生装置选择依据:根据反应物状态(固体或液体)以及是否需要加热。 收集方法: 排水法:适用于不溶于水的 ...
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