中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.向一定量的饱和NaOH溶液中加入少量Na2O固体，恢复到原来温度时，下列说法中正确的是
| A: 溶液中的Na＋总数不变 |
| B: 溶液中溶质质量不变 |
| C: 溶质的物质的量浓度不变 |
| D: 溶液的质量不变 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Y+N5bqU5raI6ICX5LqG5rC05piv5pys6aKY55qE6YeN54K544CC
- 答案：Qw==
5Y+N5bqU5YmN5ZCO5rq26LSo6YO95pivTmFPSO+8jOa4qeW6puayoeacieWPkeeUn+aUueWPmO+8jOWUr+S4gOeahOaUueWPmOaYr+S4gOmDqOWIhuawtOiiq+a2iOiAl+S6hu+8jOS5n+WwseaYr+a6tuWJgueahOi0qOmHj+WHj+WwkeOAgk5hT0jnmoTmurbop6PluqbmmK/kuI3lj5jnmoTvvIzpgqPkuYjmraTml7bmurbmtrLkuK1OYU9I55qE5rWT5bqm5LiN5Y+Y77yMTmFPSOeahOmHj+WNtOWHj+WwkeS6huOAguWboOatpOmAieaLqUPpobnjgII=
本课配套习题挑战模式2/5
单选题
难度系数：
2.一块表面已被氧化为Na2O的钠块10.8g，将其投入100g水中，产生H2 0.2g，则被氧化的钠是
| A: 9.2g |
| B: 10.6g |
| C: 6.2g |
| D: 4.6g |
一次做对，真牛！
+5奖励规则>
- 提示1：5pys6aKY5piT6ZSZ55qE5Zyw5pa55Zyo5LqO77yM6K6h566X5Ye65Lqn55Sf5rCi5rCU55qE5rCn5YyW6ZKg55qE6YeP77yM6L+Y6ZyA6KaB6K6h566X5Ye65rCn5YyW55qE5Y2V6LSo6ZKg55qE6LSo6YeP44CC
- 答案：RA==
55Sx5Lqn55Sf55qE5rCi5rCU55qE6YeP5Y+v6YCa6L+H5Y+N5bqUMk5h77yLMkg8c3ViPjI8L3N1Yj5PPTJOYU9I77yLSDxzdWI+Mjwvc3ViPuKGkeiuoeeul+WHuumSoOeahOi0qOmHj+S4ujQuNmfvvIzliJlOYTxzdWI+Mjwvc3ViPk/nmoTotKjph4/kuLo2LjJn77yM5YaN55Sx5Y+N5bqU77yaNE5h77yLTzxzdWI+Mjwvc3ViPj0yTmE8c3ViPjI8L3N1Yj5P77yM5Y+v6K6h566X5Ye66KKr5rCn5YyW55qE6ZKg55qE6LSo6YeP5Li6NC42Z+OAgjxicj7mlYXnrZTmoYjkuLpE44CC
本课配套习题挑战模式3/5
单选题
难度系数：
3.Na2O与Na2O2的相同点是
| A: 氧元素化合价 |
| B: 颜色状态 |
| C: 阴、阳离子个数比 |
| D: 为碱性氧化物 |
一次做对，真牛！
+5奖励规则>
- 提示1：5pys6aKY6ZyA6KaB5byV6LW35rOo5oSP55qE5piv6L+H5rCn5qC556a75a2Q77yM5bGe5LqO5LiA5Liq5Y6f5a2Q5Zui77yM5Zug5q2k5piv5LiA5Liq56a75a2Q44CC
- 答案：Qw==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.在一定条件下，将钠与氧气反应的生成物1.5g溶于水，所得溶液恰好能被80mL浓度为0.5mol/L的HCl溶液中和，则生成物的成分是
| A: Na2O |
| B: Na2O2 |
| C: Na2O和Na2O2 |
| D: Na2O2和NaO2 |
一次做对，真牛！
+5奖励规则>
- 提示1：55Sx5LqO5LiN55+l6YGT5Lqn54mp5pivIE5hPHN1Yj4yPC9zdWI+T+i/mOaYr05hPHN1Yj4yPC9zdWI+TzxzdWI+Mjwvc3ViPu+8jOaIluiAheS6jOiAhemDveacie+8jOWboOatpOiuvuWumuS4gOS4quWMluWtpuW8j05hPHN1Yj4yPC9zdWI+TzxzdWI+WDwvc3ViPu+8jOeul+WHuuaRqeWwlOi0qOmHj++8jOS4juS4pOenjeawp+WMlueJqeeahOWvueavlOWNs+WPr+WIpOaWre+8jg==
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.将一定量的Na、Na2O、Na2O2的混合物与足量的水反应，在标准状况下得到a L混合气体．将该混合气体通过电火花引燃，恰好完全反应，则原混合物中Na、Na2O、Na2O2的物质的量之比可能为
| A: 2：1：1 |
| B: 1：1：2 |
| C: 1：2：1 |
| D: 4：3：1 |
一次做对，真牛！
+5奖励规则>
- 提示1：5rCi5rCU5p2l5rqQ5LqO6ZKg5ZKM5rC055qE5Y+N5bqU77yM5rCn5rCU5p2l5rqQ5LqO6L+H5rCn5YyW6ZKg5LiO5rC055qE5Y+N5bqU44CC6YCa6L+H5rCi5rCU5ZKM5rCn5rCU5LmL6Ze055qE5q+U5L6L5bCx5Y+v5Lul5rGC5b6X6ZKg5ZKM6L+H5rCn5YyW6ZKg55qE5q+U5L6L44CC6ICM5rCn5YyW6ZKg5LiO5rC05LiN5Lqn55Sf5rCU5L2T77yM5Zug5q2k5a6D55qE5aSa5bCR5LiN5b2x5ZON44CC
- 答案：QQ==
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
