(1)BD (2)灰白色物质溶解,溶液变为蓝色;CuSO 4 (3)S+2H 2 SO 4 (浓) 3SO 2 ↑+2H 2 O;随着反应的进行,硫酸的浓度逐渐变小,由浓变稀,稀硫酸不能与铜发生反应 (4)①产生等量的硫酸铜,消耗的硫酸更少;②不产生污染物SO 2 (5)H 2 SO 4 +Cu+H 2 O 2 =CuSO 4 +2H 2 O |
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