氧化还原方程式配平
来源:学生作业帮 编辑:神马作文网作业帮 分类:化学作业 时间:2024/11/10 14:32:49
将H2S气体通入四种浓度不同的HNO3溶液中,分别发生下列反应,其中化学方程式配平正确的是: A. 5H2S+HNO3===5S↓+N2↑+7H2O B. 4H2S+2HNO3===S↓+NH4NO3+3H2O C. 3H2S+2HNO3===3S↓ +2NO↑ +4H2O D. 2H2S+HNO3===2S↑+NO2↑+H2O
解题思路: 根据化合价升降进行分析
解题过程:
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最终答案:略
解题过程:
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最终答案:略