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１ 实验成败原因分析 乙醛还原氢氧化铜是乙醛的重要化学性质，反应式是：ＣＨ３ＣＨＯ＋２Ｃｕ（ＯＨ）２＋ＮａＯＨ→ＣＨ３ＣＯＯＮａ＋Ｃｕ２Ｏ ＋３Ｈ２Ｏ，反应中有无红色Ｃｕ２Ｏ沉淀生成是判断该反应是否发生的重要现象。但在做该实验时，更多的情况下往往只看到黄褐
1. Analysis of the success or failure of the experiment The reduction of copper hydroxide by acetaldehyde is an important chemical property of acetaldehyde. The reaction formula is: CH3CHO+2Cu(OH)2+NaOH→CH3COONa+Cu2O+3H2O. Whether or not red Cu2O precipitates in the reaction is an important phenomenon to judge whether the reaction occurs. But when doing this experiment, more often than not only see the brown