本课配套习题挑战模式1/5
单选题
难度系数:
1.下列氧化物不能跟铝粉组成铝热剂的是
A: WO3 |
B: MgO |
C: MnO2 |
D: V2O5 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5Y+v5Lul5LiN6ICD6JmR5LiN54af5oKJ55qE6YeR5bGe5YWD57Sg77yM55u05o6l6KeC5a+f5ZOq56eN6YeR5bGe55qE6YeR5bGe5oCn5q+U6ZOd5by65Y2z5Y+v44CC
- 答案:Qg==
6ZWB55qE6YeR5bGe5oCn5q+U6ZOd5by677yM5Zug5q2k6ZOd5LiN6IO95bCG6ZWB5LuO5rCn5YyW6ZWB5Lit572u5o2i5Ye65p2l44CC6YCJ5oupQumhueOAgg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列各组物质中属铝热剂的是
A: Al ; Cr2O3 |
B: Al2O3; Fe |
C: Al; MgO |
D: Mn ;Al2O3 |
一次做对,真牛!
+5奖励规则>
- 提示1:6ZOd54Ot5YmC5piv5oyH6ZOd5Y2V6LSo5LiO6YeR5bGe5rCn5YyW54mp55qE5re35ZCI54mp44CC
- 提示2:5L2G6K+l6YeR5bGe5rCn5YyW54mp5omA5a+55bqU55qE6YeR5bGe6KaB5q+U6ZOd55qE6YeR5bGe5oCn5byx44CC
- 答案:QQ==
QemhueS4remTneWPr+S7pei/mOWOn0NyPHN1Yj4yPC9zdWI+TzxzdWI+Mzwvc3ViPu+8m+mTneeahOmHkeWxnuaAp+W8uuS6jumTrOOAguaVhemAieaLqUEg6aG544CC
本课配套习题挑战模式3/5
单选题
难度系数:
3.现有下列金属:①铁、②镁、③锰、④钒、⑤铬,其中可用铝热法制备的有
A: ①②④ |
B: ①②③⑤ |
C: ①③④⑤ |
D: ①②③④⑤ |
一次做对,真牛!
+5奖励规则>
- 提示1:6YeR5bGe5Ya254K855qE5a6e6LSo5Li66YeR5bGe56a75a2Q55qE55S15a2Q6KKr6L+Y5Y6f55Sf5oiQ5Y2V6LSo77yM55So6ZOd54Ot5rOV5Yi25aSH6YeR5bGe77yM5omA5Yi25aSH6YeR5bGe55qE5rS75rO85oCn5bqU5q+U6ZOd5byx77yO
- 答案:Qw==
4pGg6ZOB44CB4pGi6ZSw44CB4pGj55++44CB4pGk6ZOs562J6YeR5bGe55qE5rS75rO85oCn5q+U6ZOd5byx77yM5Zyo6auY5rip5LiL55So6ZOd54Ot5rOV5Yi25aSH77yM6ICM4pGh6ZWB55qE5rS75rO85oCn5q+U6ZOd5by677yM5LiN6IO96KKr6ZOd572u5o2i55Sf5oiQ5Y2V6LSo77yM5LiN6IO955So6ZOd54Ot5rOV5Yi25aSH77yO
本课配套习题挑战模式4/5
单选题
难度系数:
4.“铝热反应”是一种重要的化学反应,下列说法正确的是
A: 是吸热反应 |
B: 铝热剂是纯净物 |
C: 铝热剂是混合物 |
D: 铝热反应不是氧化还原反应 |
一次做对,真牛!
+5奖励规则>
- 提示1:5piT6ZSZ54K55Li677ya5bm26Z2e5omA5pyJ6auY5rip5p2h5Lu25LiL55qE5Y+N5bqU6YO95piv5ZC454Ot5Y+N5bqU44CC
- 答案:Qw==
Qe+8jumTneeDreWPjeW6lOiZveeEtuWcqOmrmOa4qeadoeS7tuS4i+WPkeeUn++8jOS9huaYr+aUvueDreWPjeW6lO+8jOaVhUHplJnor6/vvJs8YnI+Qu+8jumTneeDreWJguS4uumTneWSjOmHkeWxnuawp+WMlueJqeeahOa3t+WQiOeJqe+8jOaVhULplJnor6/vvJs8YnI+Q++8jumTneeDreWJguS4uumTneWSjOmHkeWxnuawp+WMlueJqeeahOa3t+WQiOeJqe+8jOaVhUPmraPnoa7vvJs8YnI+RO+8juWPjeW6lOWcqOmrmOa4qeadoeS7tuS4i+WPkeeUn+awp+WMlui/mOWOn+WPjeW6lOe9ruaNouWHuumHkeWxnuWNlei0qO+8jOaVhUTplJnor6/vvI48YnI+5pWF6YCJQ++8jg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.图是铝热反应(2Al+Fe2O3Al2O3+2Fe)的实验装置,有关该反应的下列说法中正确的是
A: a为镁条 |
B: b为氧化铁与铝粉混合物 |
C: 2mol氧化剂参与反应则电子转移6NA个电子 |
D: 还原剂与氧化产物的物质的量之比为1:2 |
一次做对,真牛!
+5奖励规则>
- 提示1:6ZOd5LiO5rCn5YyW6ZOB55qE6ZOd54Ot5Y+N5bqU5Li6MkFsK0ZlPHN1Yj4yPC9zdWI+TzxzdWI+MzxpbWcgd2lkdGg9MzggaGVpZ2h0PTMzIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNjgvMjIvckJBQ0psVXNaMEtnN3dFU0FBQUJwQWdpRUxrNjExLnBuZyI+PC9zdWI+QWw8c3ViPjI8L3N1Yj5PPHN1Yj4zPC9zdWI+KzJGZQ==
- 提示2:5Zue6aG+6K++56iL5Lit55qE5a6e6aqM5YaF5a655Y2z5Y+v6YCJ5Ye65q2j56Gu562U5qGI44CC
- 答案:QQ==
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