本课配套习题挑战模式1/5
单选题
难度系数:
1.对氧化铝的分类中正确的是
A: 酸性氧化物 |
B: 碱性氧化物 |
C: 两性氧化物 |
D: 不成盐氧化物(像CO一样) |
一次做对,真牛!
+5奖励规则>
- 提示1:5rCn5YyW6ZOd5oul5pyJ6YeR5bGe5rCn5YyW54mp55qE5oCn6LSo77yM5Y+v5LiO6YW45Y+N5bqU77yM5ZCM5pe25Lmf6IO95LiO56Kx5Y+R55Sf5Y+N5bqU44CC
- 答案:Qw==
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本课配套习题挑战模式2/5
单选题
难度系数:
2.下列说法正确的是
A: Al2O3难溶于水,不跟水反应,所以它不是Al(OH)3对应的氧化物 |
B: 因为Al2O3是金属氧化物,所以它是碱性氧化物 |
C: Al2O3能跟所有的酸碱溶液反应 |
D: Al2O3能跟强的酸碱溶液反应 |
一次做对,真牛!
+5奖励规则>
- 提示1:5a+55LqO5rCn5YyW6ZOd55qE6K6k6K+G6aaW5YWI6KaB6K6w5L2P6L+Z5piv5LiA56eN5YW45Z6L55qE5Lik5oCn5rCn5YyW54mp44CC
- 提示2:5L2c5Li65LiA56eN6YeR5bGe5rCn5YyW54mp77yM6IO95LiO56Kx5Y+N5bqU5bey57uP5b6I54mb5LqG77yM5oCO5LmI5Y+v6IO95ZKM5omA5pyJ56Kx6YO95Y+N5bqU44CC
- 答案:RA==
5rCn5YyW6ZOd5a+55bqU5ZCM562J5Lu35oCB55qE5rCi5rCn5YyW54mp5piv5rCi5rCn5YyW6ZOd77yMQemhuemUmeivr++8mzxicj7lroPomb3nhLbmmK/kuIDnp43ph5HlsZ7msKfljJbnianvvIzljbTmmK/kuIDnp43kuKTmgKfmsKfljJbnianvvIxC6aG56ZSZ6K+v77ybPGJyPuawp+WMlumTneS9k+eOsOeiseaAp+awp+WMlueJqeeahOaAp+i0qO+8jOWPr+S7peS4jumFuOWPkeeUn+WPjeW6lO+8jOS5n+WPr+S7peS9k+eOsOmFuOaAp+awp+WMlueJqeeahOaAp+i0qO+8jOS4juW8uueiseWPkeeUn+WPjeW6lO+8jOS9huS4jeiDveS4juW8seeiseWPjeW6lOOAgkPpobnplJnor6/vvIxE6aG55q2j56Gu44CC
本课配套习题挑战模式3/5
单选题
难度系数:
3.
若要除去MgO中的Al2O3杂质,选用的试剂为
A: 稀盐酸 |
B: NaOH溶液 |
C: NH3·H2O |
D: H2O |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5Lik56eN5rCn5YyW54mp5Z2H5Li65LiN5rq25LqO5rC055qE5Zu65L2T77yM6ICM6YCJ6aG55Z2H5Li65ray5L2T44CC6Zmk5p2C5oCd6Lev5piv6KaB6Zmk5Y6755qE5rCn5YyW6ZOd5Y+C5LiO5rq25ray55qE5Y+N5bqU5oiW6ICF5rq25LqO5ray5L2T77yM6ICM5rCn5YyW6ZWB5LiN5rq25LqO5rq25ray77yM5o6l5LiL5p2l6L+H5ruk5bCx5Y+v5Lul5LqG44CCPC9wPg==
- 答案:Qg==
PHA+5rCn5YyW6ZWB5ZKM5rCn5YyW6ZOd5LiO55uQ6YW45Z2H5Y+C5Yqg5Y+N5bqU77yM5YWo6YOo6L+b5YWl5rq25ray5Lit77yM5peg5rOV5YiG56a777yMQemhuemUmeivr++8mzxicj7msKfljJbpk53lj6/ku6XkuI7msKLmsKfljJbpkqDmurbmtrLlj43lupTvvIzov5vlhaXmurbmtrLvvIzogIzmsKfljJbplYHkuI3murbkuo7murbmtrLvvIzov4fmu6TljbPlj6/liIbnprvvvIxC6aG55q2j56Gu77ybPGJyPuawqOawtOS4juS4pOenjeawp+WMlueJqeWdh+S4jeWPkeeUn+WPjeW6lO+8jEPpobnml6Dms5XpmaTmnYLvvJs8YnI+5Lik6ICF6YO95LiN5rq25LqO5rC077yM5Zug5q2k5rC05Lmf5peg5rOV5YGa5Yiw6Zmk5p2C77ybPGJyPue7vOS4iu+8jOmAieaLqULpobnjgII8YnI+PC9wPg==
本课配套习题挑战模式4/5
多选题
难度系数:
4.用坩锅钳夹住一小块刚用酸充分处理过的铝箔,在酒精灯上加热至熔化,发现熔化的铝并不滴落.下列关于上述实验现象的解释正确的是
A: 火焰温度太低不能使铝燃烧 |
B: 铝在空气中能很快形成氧化膜 |
C: 氧化铝的熔点比铝的熔点高 |
D: 用酸处理时未能将氧化铝溶解 |
一次做对,真牛!
+5奖励规则>
- 提示1:6ZOd566U6Z2e5bi45a655piT6KKr5rCn5YyW77yM5Y2z5L6/5Yia5Yia5aSE55CG6L+H77yM5Zyo5Yqg54Ot5Lul5YmN5Y+I5Lya6KKr5rCn5YyW44CC
- 答案:QixD
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本课配套习题挑战模式5/5
单选题
难度系数:
5.Al2O3常用于制造耐火坩埚,但氧化铝坩埚不能用于加热熔融下列化合物中的
A: NaCl |
B: NaNO3 |
C: NaOH |
D: Na2SO4 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rCn5YyW6ZOd55So5L2c5Z2p5Z+a77yM55So5LqO54aU6J6N55qE54mp6LSo5LiA5a6a5LiN6IO95LiO5rCn5YyW6ZOd5Y+R55Sf5Y+N5bqU44CC
- 答案:Qw==
5rCi5rCn5YyW6ZKg5LiO5rCn5YyW6ZOd5Y+v5Lul5Y+R55Sf5Y+N5bqU77yM55Sf5oiQ5YGP6ZOd6YW46ZKg5LiO5rCi5rCU77yM5Zug5q2k5rCn5YyW6ZOd5Z2p5Z+a5LiN6IO955So5LqO54aU6J6N5rCi5rCn5YyW6ZKg44CC6YCJ5oupQ+mhueOAgg==