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.
氯酸是一种强酸，浓度超过40%时会发生分解，该反应可表示为aHClO3―→bO2↑＋cCl2↑＋dHClO4＋eH2O，下列有关说法不正确的是
| A: 由反应可确定氧化性：HClO3>O2 |
| B: 由非金属性Cl>S，可推知酸性HClO3>H2SO4 |
| C: 若氯酸分解所得1 mol混合气体的质量为45 g，则反应方程式可表示为3HClO3===2O2↑＋Cl2↑＋HClO4＋H2O |
| D: 若化学计量数a＝8，b＝3，则生成3 mol O2时转移20 mol电子 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u6Z2e6YeR5bGe5oCn5Y+q6IO95q+U6L6D5pyA6auY5Lu35ZCr5rCn6YW455qE6YW45oCn5by65byx77yM5pWFQumUmeivrzxicj48L3A+
- 答案：Qg==
PHA+5qC55o2u6Z2e6YeR5bGe5oCn5Y+q6IO95q+U6L6D5pyA6auY5Lu35ZCr5rCn6YW455qE6YW45oCn5by65byx77yM5pWFQumUmeivr++8mzxicj48L3A+PHA+55Sx5rCn5YyW5oCn77ya5rCn5YyW54mpJmd0O+awp+WMluS6p+eJqeWPr+S7peWIpOaWrUHmraPnoa7vvJs8YnI+PC9wPjxwPkPpgInpobnlj6/ku6XnlKjlj43mjqjms5XvvIzlt7Lnn6XnmoTlj43lupTmlrnnqIvlvI/kuK3vvIznlJ/miJAzbW9s5re35ZCI5rCU5L2T55qE5oC76LSo6YeP5Li6MsOXMzIrNzE9MTM1Z++8jOWImeeUn+aIkDFtb2zmt7flkIjmsJTkvZPnmoTotKjph4/kuLo0NWfvvJvvvKPmraPnoa7vvJs8YnI+PC9wPjxwPkTpobnvvJo8L3A+PHA+SENsTzxzdWI+Mzwvc3ViPuS4reeahENs5Y+Y5Li6MW1vbCBIQ2xPPHN1Yj40PC9zdWI+IOWksTJtb2wg55S15a2Q77yMSENsTzxzdWI+Mzwvc3ViPuS4reeahE/lj5jkuLoxbW9sIE88c3ViPjI8L3N1Yj4g5aSxNG1vbOeUteWtkO+8mzwvcD48cD5IQ2xPPHN1Yj4zPC9zdWI+5Lit55qEQ2zlj5jkuLoxbW9sIENsPHN1Yj4yPC9zdWI+5b6XMTBtb2wg55S15a2Q44CCPC9wPjxwPuWIpOaWreWFtueUteWtkOi9rOenu+mmluWFiOimgemFjeW5s+WMluWtpuaWueeoi+W8j+W5tuWIhuaekOWFtueUteWtkOi9rOenu+aDheWGteOAguW3suefpWE9OO+8jGI9M++8jOagueaNrueUteWtkOWuiOaBkuS7peWPikNs5YWD57Sg5a6I5oGS5Y+v5Lul5YiX5Ye65pa556iLOjxicj48L3A+PHA+55S15a2Q5a6I5oGS77yaMTIrMmQ9MTBjPC9wPjxwPkNs5YWD57Sg5a6I5oGS77yaMmMrZD04PC9wPjxwPuWImWM9Mu+8jGQ9NO+8jOWMluWtpuaWueeoi+W8j+S4uu+8mjhIQ2xPPHN1Yj4zPC9zdWI+PT09M088c3ViPjI8L3N1Yj7ihpErMkNsPHN1Yj4yPC9zdWI+4oaRKyA0SENsTzxzdWI+NDwvc3ViPisySDxzdWI+Mjwvc3ViPk/jgILlvZPnlJ/miJAzbW9sIE88c3ViPjI8L3N1Yj7ml7bvvIzovaznp7vnlLXlrZAzw5c0bW9sKzTDlzJtb2wgPSAyw5cxMG1vbD0yMG1vbO+8jETpobnmraPnoa7jgII8YnI+PC9wPjxwPjxicj48L3A+
本课配套习题挑战模式2/5
单选题
难度系数：
2.
ClO2是一种杀菌消毒效率高、二次污染小的水处理剂。实验室中可通过以下反应制得： 2KClO3＋H2C2O4＋H2SO4
2ClO2↑＋K2SO4＋2CO2↑＋2H2O。下列说法不正确的是
| A: CO2是氧化产物 |
| B: H2C2O4在反应中被氧化 |
| C: H2C2O4的氧化性强于ClO2的氧化性 |
| D: ClO2作水处理剂时，利用了其强氧化性 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+SDxzdWI+Mjwvc3ViPkM8c3ViPjI8L3N1Yj5PPHN1Yj40PC9zdWI+5Li66L+Y5Y6f5YmC77yM6KKr5rCn5YyW77yM5rCn5YyW5Lqn54mp5Li6Q088c3ViPjI8L3N1Yj7jgII8YnI+PC9wPg==
- 提示2：PHA+SDxzdWI+Mjwvc3ViPkM8c3ViPjI8L3N1Yj5PPHN1Yj40PC9zdWI+6KGo546w55qE5piv6L+Y5Y6f5oCnPC9wPg==
- 提示3：PHA+Q2xPPHN1Yj4yPC9zdWI+55qE5by65rCn5YyW5oCn6IO95p2A54Gt5rC05Lit55qE57uG6I+M562J44CCPGJyPjwvcD4=
- 答案：Qw==
PHA+SDxzdWI+Mjwvc3ViPkM8c3ViPjI8L3N1Yj5PPHN1Yj40PC9zdWI+5Li66L+Y5Y6f5YmC77yM6KKr5rCn5YyW77yM5rCn5YyW5Lqn54mp5Li6Q088c3ViPjI8L3N1Yj7jgILpgInpoblB44CBQuato+ehru+8mzxicj7pgInpoblD77yMSDxzdWI+Mjwvc3ViPkM8c3ViPjI8L3N1Yj5PPHN1Yj40PC9zdWI+6KGo546w55qE5piv6L+Y5Y6f5oCn77yM5LiN5q2j56Gu77ybPGJyPumAiemhuUTvvIxDbE88c3ViPjI8L3N1Yj7nmoTlvLrmsKfljJbmgKfog73mnYDnga3msLTkuK3nmoTnu4boj4znrYnjgII8YnI+PC9wPg==
本课配套习题挑战模式3/5
单选题
难度系数：
3.
在一定条件下，分别以高锰酸钾、氯酸钾、过氧化氢为原料制取氧气，当三个反应中转移电子个数比为９：３：８时，在同温同压下三个反应中所制得的氧气体积之比为
| A: 4:3:2 |
| B: 9:3:16 |
| C: 2:2:1 |
| D: 9:3:8 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6auY6ZSw6YW46ZK+5Yi25rCn5rCU77yaMktNbk88c3ViPjQ8L3N1Yj49PT1LPHN1Yj4yPC9zdWI+TW5PPHN1Yj40PC9zdWI+K01uTzxzdWI+Mjwvc3ViPitPPHN1Yj4yPC9zdWI+4oaR77yM5q+P55Sf5oiQMW1vbOawp+awlOi9rOenuzRtb2znlLXlrZDvvJs8L3A+
- 提示2：PHA+5rCv6YW46ZK+5Yi25rCn5rCU77yaMktDbE88c3ViPjM8L3N1Yj49PT0yS0NsKzNPPHN1Yj4yPC9zdWI+4oaR77yM5q+P55Sf5oiQMW1vbOawp+awlOi9rOenuzRtb2znlLXlrZDvvJs8L3A+
- 提示3：PHA+6L+H5rCn5YyW5rCi5Yi25rCn5rCU77yaMkg8c3ViPjI8L3N1Yj5PPHN1Yj4yPC9zdWI+PT09Mkg8c3ViPjI8L3N1Yj5PKyBPPHN1Yj4yPC9zdWI+4oaR77yM5q+P55Sf5oiQMW1vbOawp+awlOi9rOenuzJtb2znlLXlrZDvvJs8L3A+
- 答案：Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.
R2O8n-离子在一定条件下可将Mn2+氧化成MnO4-，若反应后R2O8n-变成RO42-，又知反应中氧化剂和还原剂的分子个数比为5：2，则R2O8n-中R元素的化合价为
| A: 2 |
| B: 3 |
| C: 5 |
| D: 7 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+NVI8c3ViPjI8L3N1Yj5PPHN1Yj44PC9zdWI+PHN1cD5uLTwvc3VwPu+8izJNbjxzdXA+Mis8L3N1cD4g4oaSIDEwUk88c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+77yLMk1uTzxzdWI+NDwvc3ViPjxzdXA+LTwvc3VwPjxicj48L3A+
- 提示2：PHA+Mk1uPHN1cD4yKzwvc3VwPiDihpIyTW5PPHN1Yj40PC9zdWI+PHN1cD4tPC9zdXA+5YyW5ZCI5Lu35Y2H6auYMTDvvJs1UjxzdWI+Mjwvc3ViPk88c3ViPjg8L3N1Yj48c3VwPm4tPC9zdXA+IOKGkjEwUk88c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+5YyW5ZCI5Lu36ZmN5L2OMTA8YnI+PC9wPg==
- 提示3：PHA+Uk88c3ViPjQ8L3N1Yj48c3VwPjItPC9zdXA+5LitUueahOWMluWQiOS7t+S4uis277yM5YiZUjxzdWI+Mjwvc3ViPk88c3ViPjg8L3N1Yj48c3VwPm4tPC9zdXA+IOS4rVLnmoTljJblkIjku7fkuLorNzxicj48L3A+
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.
水热法制备纳米颗粒Y(化合物)的反应为：3Fe2＋＋2S2O
＋O2＋aOH－===Y＋S4O
＋2H2O，下列有关说法不正确的是
| A: a＝4 |
| B: Y的化学式为Fe2O3 |
| C: S2O |
| D: 每32 g O2参加反应，转移电子的物质的量为4 mol |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+WeS4uuWMluWQiOeJqe+8jOeUseeUteiNt+WuiOaBkuefpe+8jDxpPmE8L2k+77ydNDwvcD4=
- 提示2：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
- 提示3：PHA+5Zyo5Y+N5bqU5LitUzxzdWI+Mjwvc3ViPk88aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjcvQUIvckJBQ0ZGT0EwRkN5OWxMQ0FBQUJOb3p6Zm53NzMyLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yNy9BQi9yQkFDRkZPQTBGQ3k5bExDQUFBQk5venpmbnc3MzIucG5nIiBoZWlnaHQ9IjQzIiB3aWR0aD0iMTYiPuS4reehq+WFg+e0oOeahOWMluWQiOS7t+WNh+mrmDwvcD4=
- 提示4：PHA+MSBtb2zmsKfmsJTlj4LliqDlj43lupTovaznp7s0IG1vbOeUteWtkDwvcD4=
- 答案：Qg==
PHA+5pys6aKY5YiH5YWl54K55piv5YWD57Sg5YyW5ZCI5Lu377yM5Y+v57u85ZCI6L+Q55So55S16I235a6I5oGS44CB5b6X5aSx55S15a2Q5a6I5oGS5ZKM5Y6f5a2Q5a6I5oGS562J44CCPGJyPlnkuLrljJblkIjnianvvIznlLHnlLXojbflrojmgZLnn6XvvIw8aT5hPC9pPu+8nTTvvIxB6aG55q2j56Gu44CCPGJyPueUsTJTPHN1Yj4yPC9zdWI+TzxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yNy9BQi9yQkFDRkZPQTBGQ3k5bExDQUFBQk5venpmbnc3MzIucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzI3L0FCL3JCQUNGRk9BMEZDeTlsTENBQUFCTm96emZudzczMi5wbmciIGhlaWdodD0iNDMiIHdpZHRoPSIxNiI+4oaSUzxzdWI+NDwvc3ViPk88aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNjMvOUMvckJBQ0UxT0EwRkRBRURGRkFBQUJPdVJjcUZrNzM5LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC82My85Qy9yQkFDRTFPQTBGREFFREZGQUFBQk91UmNxRms3MzkucG5nIiBoZWlnaHQ9IjQzIiB3aWR0aD0iMTYiPu+8jOWkseWOuzIgbW9s55S15a2Q77yMTzxzdWI+Mjwvc3ViPuKGkjJPPHN1cD4yPC9zdXA+PHN1cD7vvI08L3N1cD7vvIzlvpc0IG1vbOeUteWtkO+8jOivtOaYjuWPquaciTJGZTxzdXA+Mjwvc3VwPjxzdXA+77yLPC9zdXA+4oaSMkZlPHN1cD4zPC9zdXA+PGJyPuWkseWOuzIgbW9s55S15a2Q77yM5YaN55Sx5Y6f5a2Q5a6I5oGS55+l77yMWeS4uuWbm+awp+WMluS4iemTge+8jELpobnplJnor6/vvJs8YnI+5Zyo5Y+N5bqU5LitUzxzdWI+Mjwvc3ViPk88aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMjcvQUIvckJBQ0ZGT0EwRkN5OWxMQ0FBQUJOb3p6Zm53NzMyLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8yNy9BQi9yQkFDRkZPQTBGQ3k5bExDQUFBQk5venpmbnc3MzIucG5nIiBoZWlnaHQ9IjQzIiB3aWR0aD0iMTYiPuS4reehq+WFg+e0oOeahOWMluWQiOS7t+WNh+mrmO+8jEPpobnmraPnoa7vvJs8YnI+MW1vbOawp+awlOWPguWKoOWPjeW6lOi9rOenuzQgbW9s55S15a2Q77yMROmhueato+ehruOAgjwvcD4=
