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1、硫酸根離子的檢驗:BaCl2 + Na2SO4 = BaSO4↓+ 2NaCl2、碳酸根離子的檢驗:CaCl2 + Na2CO3 = CaCO3↓+ 2NaCl3、碳酸鈉與鹽酸反應:Na2CO3 + 2HCl = 2NaCl + H2O + CO2↑4、木炭還原氧化銅:2CuO + C高溫2Cu + CO2…
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