(6分)根据下列物质的化学性质,判断其应用错误的是( )
C
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(6分)根据下列物质的化学性质,判断其应用错误的是( )
C
(6分)下列单质或化合物性质的描述正确的是( )
C
(6分)下列叙述正确的是( )
D
(6分)完成下列实验所选择的装置或仪器(夹持装置已略去)正确的是( )
A
(6分)下列电解质溶液的有关叙述正确的是( )
D
(6分)已知2SO2 (g)+O 2 (g)⇌2SO 3 (g) ;△H=﹣197kJ•mol﹣1.向同温、同体
积的三个密闭容器中分别充入气体: (甲) 2mol SO2 和1mol O 2; (乙) 1mol SO2 和
0.5mol O2; (丙) 2mol SO3. 恒温、 恒容下反应达平衡时, 下列关系一定正确的是 ( )
B
中档题为主
单选 6
中档 6
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