优优班--学霸训练营 > 题目详情
  • 探究\(\rm{2KMnO_{4}+5H_{2}C_{2}O_{4}+3H_{2}SO_{4}═K_{2}SO_{4}+2MnSO_{4}+10CO_{2}↑+8H_{2}O}\) 反应速率的影响因素,有关实验数据如下表所示:
    实验
    编号
    温度
    \(\rm{℃}\)
    催化剂用量\(\rm{g}\) 酸性\(\rm{KMnO_{4}}\)溶液 \(\rm{H_{2}C_{2}O_{4}}\)溶液 \(\rm{KMnO_{4}}\)溶液褪色平均时间\(\rm{(min)}\)
    体积\(\rm{(mL)}\) 浓度\(\rm{(mol⋅L^{-1})}\) 体积\(\rm{(mL)}\) 浓度\(\rm{(mol⋅L^{-1})}\)
    \(\rm{1}\) \(\rm{25}\) \(\rm{0.5}\) \(\rm{4}\) \(\rm{0.1}\) \(\rm{8}\) \(\rm{0.2}\) \(\rm{12.7}\)
    \(\rm{2}\) \(\rm{80}\) \(\rm{0.5}\) \(\rm{4}\) \(\rm{0.1}\) \(\rm{8}\) \(\rm{0.2}\) \(\rm{a}\)
    \(\rm{3}\) \(\rm{25}\) \(\rm{0.5}\) \(\rm{4}\) \(\rm{0.01}\) \(\rm{8}\) \(\rm{0.2}\) \(\rm{6.7}\)
    \(\rm{4}\) \(\rm{25}\) \(\rm{0}\) \(\rm{4}\) \(\rm{0.01}\) \(\rm{8}\) \(\rm{0.2}\) \(\rm{b}\)
    下列说法不正确的是\(\rm{(}\)  \(\rm{)}\)
    【考点】探究影响化学反应速率的因素
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度:较易
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