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.NaNO2因外观和食盐相似，又有咸味，容易使人误食中毒。已知NaNO2能发生如下反应：2NaNO2＋4HI===2NO↑＋I2＋2NaI＋2H2O。反应中氧化剂是
| A: NaNO2 |
| B: HI |
| C: NO |
| D: NaI |
一次做对，真牛！
+5奖励规则>
- 提示1：IE5hTk88c3ViPjI8L3N1Yj7kuK1O5YWD57Sg55qE5YyW5ZCI5Lu36ZmN5L2O
- 提示2：IOS9nOawp+WMluWJgg==
- 答案：QQ==
TmFOTzxzdWI+Mjwvc3ViPuS4rU7lhYPntKDnmoTljJblkIjku7fpmY3kvY7vvIzkvZzmsKfljJbliYIu
本课配套习题挑战模式2/5
单选题
难度系数：
2.
下列转化中，加入还原剂才能实现的是
| A: MnO4-→MnO2 |
| B: H2S→S |
| C: NH3→NO |
| D: HCO3-→CO2 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+TW7ku44rN+S7t+KGkis05Lu377yM6ZmN5Lu36KKr6L+Y5Y6f77yM6ZyA6KaB6L+Y5Y6f5YmC77ybPC9wPg==
- 提示2：PHA+U+S7ji0y5Lu34oaSMOS7t++8jOWNh+S7t+iiq+awp+WMlu+8jOmcgOimgeawp+WMluWJgu+8mzwvcD4=
- 提示3：PHA+TuS7ji0z5Lu34oaSKzLku7fvvIzljYfku7fooqvmsKfljJbvvIzpnIDopoHmsKfljJbliYLvvJs8L3A+
- 提示4：PHA+ROmhueaXoOS7t+aAgeWPmOWMlu+8jOS4jemcgOimgeawp+WMlui/mOWOn+WPjeW6lOWunueOsO+8mzwvcD4=
- 答案：QQ==
PHA+TW7ku44rN+S7t+KGkis05Lu377yM6ZmN5Lu36KKr6L+Y5Y6f77yM6ZyA6KaB6L+Y5Y6f5YmC77ybPGJyPlPku44tMuS7t+KGkjDku7fvvIzljYfku7fooqvmsKfljJbvvIzpnIDopoHmsKfljJbliYLvvJs8YnI+TuS7ji0z5Lu34oaSKzLku7fvvIzljYfku7fooqvmsKfljJbvvIzpnIDopoHmsKfljJbliYLvvJs8YnI+ROmhueaXoOS7t+aAgeWPmOWMlu+8jOS4jemcgOimgeawp+WMlui/mOWOn+WPjeW6lOWunueOsO+8mzwvcD4=
本课配套习题挑战模式3/5
单选题
难度系数：
3.
硫酸铵在强热条件下分解，生成氨气、二氧化硫、氮气和水，反应中生成的氧化产物与还原产物分子数之比为
| A: 1:3 |
| B: 2:3 |
| C: 1:1 |
| D: 3:1 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+M++8iE5IPHN1Yj40PC9zdWI+77yJPHN1Yj4yPC9zdWI+U088c3ViPjQ8aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjcvQUIvckJBQ0ZGT0F6LVhCVnJBd0FBQUJUU3JMQWZFNDQ3LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yNy9BQi9yQkFDRkZPQXotWEJWckF3QUFBQlRTckxBZkU0NDcucG5nIiBoZWlnaHQ9IjIyIiB3aWR0aD0iNDUiPjwvc3ViPjROSDxzdWI+Mzwvc3ViPuKGkSszU088c3ViPjI8L3N1Yj7ihpErTjxzdWI+Mjwvc3ViPuKGkSs2SDxzdWI+Mjwvc3ViPk/vvIw8YnI+PC9wPg==
- 提示2：PHA+5rCn5YyW5Lqn54mp5pivTjxzdWI+Mjwvc3ViPu+8jOi/mOWOn+S6p+eJqeaYr1NPPHN1Yj4yPC9zdWI+77yM5qC55o2u5Y+Y5Lu35pWw55u4562J5Y+v55+l57O75pWw5LmL5q+U5Li6MTozPGJyPjwvcD4=
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.下列氧化还原反应中，水作为氧化剂的是
| A: CO+H2O=CO2+H2 |
| B: 3NO2+H2O=2HNO3+NO |
| C: Na2O+H2O=2NaOH |
| D: 2F2+2H2O=4HF+O2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWkseWNh+i/mOWJguawp++8jOWkseeUteWtkO+8jOWMluWQiOS7t+S4iuWNh++8jOaYr+i/mOWOn+WJgu+8jOWPkeeUn+awp+WMluWPjeW6lO+8mw==
- 提示2：IOW+l+mZjeawp+WJgui/mO+8jOW+l+eUteWtkO+8jOWMluWQiOS7t+S4i+mZje+8jOaYr+awp+WMluWJgu+8jOWPkeeUn+i/mOWOn+WPjeW6lO+8mw==
- 答案：QQ==
5aSx5Y2H6L+Y5YmC5rCn77yM5aSx55S15a2Q77yM5YyW5ZCI5Lu35LiK5Y2H77yM5piv6L+Y5Y6f5YmC77yM5Y+R55Sf5rCn5YyW5Y+N5bqU77ybPGJyPuW+l+mZjeawp+WJgui/mO+8jOW+l+eUteWtkO+8jOWMluWQiOS7t+S4i+mZje+8jOaYr+awp+WMluWJgu+8jOWPkeeUn+i/mOWOn+WPjeW6lO+8mw==
本课配套习题挑战模式5/5
单选题
难度系数：
5.制备氰氨基化钙的化学方程式为： CaCO3＋2HCN===CaCN2＋CO↑＋H2↑＋CO2↑，在反应中
| A: 氢元素被氧化，碳元素被还原 |
| B: HCN是氧化剂，CaCO3是还原剂 |
| C: CaCN2是氧化产物，H2为还原产物 |
| D: CO为氧化产物，H2为还原产物 |
一次做对，真牛！
+5奖励规则>
- 提示1：IEhDTuS4rUjlhYPntKDnmoTljJblkIjku7fkuLorMe+8jEPlhYPntKDnmoTljJblkIjku7fkuLorMg==
- 提示2：IENhQ048c3ViPjI8L3N1Yj7kuK1D5YWD57Sg55qE5YyW5ZCI5Lu35Li6KzTku7fvvIxO5YWD57Sg55qE5YyW5ZCI5Lu35Li6LTPku7c=
- 提示3：IENhQ088c3ViPjM8L3N1Yj7kuK3nmoRD5YWD57Sg6L2s5YyW5Li6Q088c3ViPjI8L3N1Yj7vvIxIQ07kuK1I5YWD57Sg6L2s5YyW5Li6SDxzdWI+Mjwvc3ViPu+8jEPlhYPntKDkuIDpg6jliIbovazljJbkuLpDYUNOPHN1Yj4yPC9zdWI+77yM5Y+m5LiA6YOo5YiG6L2s5YyW5Li6Q0/jgII=
- 答案：Qw==
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
