向30.0ml硫酸铜溶液中加入过量铝粉,待充分反应后再向其中加入2.00mol/L烧碱溶液至沉淀不再减少.
向30.0ml硫酸铜溶液中加入过量铝粉,待充分反应后再向其中加入2.00mol/L烧碱溶液至沉淀不再减少,消耗烧碱溶液210ml,且收集到气体0.672L(标准状况),
1.求加入铝粉的质量
2.求原硫酸铜溶液的物质的量浓度
人气:244 ℃ 时间:2020-03-18 12:59:50
解答
2Al+3CuSO4=Al2(SO4)3+3Cu 0.1 0.150.05Al离子+4 氢氧根=偏铝酸根+2H2o0.10.4(0.21x2-0.02)2Al+2NaOH+2H2O=2NaAlO2+3H20.020.02 0.03(0.672)以上数字单位...
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