皮皮学，免费搜题
登录
搜题
【简答题】
（2008淄博一模，16）铝的阳极氧化，是一种常用的金属表面处理技术，它能使铝的表面生成一层致密的氧化膜，该氧化膜不溶于稀硫酸。某化学研究小组在实验室中按下列步骤模拟该生产过程。填写下列空白： (1)配制实验用的溶液。要配制200mL密度为1.2g·cm -3 的溶质质量分数为16％ 的NaOH溶液，需要称取 gNaOH固体。 (2)把铝片浸入热的16％NaOH溶液中约半分钟左右洗去油污，除去表面的氧化膜，取出用水冲洗。写出除去氧化膜的离子方程式 。 (3)如图，组装好仪器，接通开关K，通电约25min。在阳极生成氧化铝，阴极产生气体。写出该过程中的电极反应式： 阳极 阴极 (4)断开电路，取出铝片，用1％稀氨水中和表面的酸液，再用水冲洗干净。写出该过程发生反应的离子方程式
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Louise decided to lend money to the author because______.
A.
she wanted to join his company
B.
she knew he would build a team
C.
she knew his plan would succeed
D.
she wanted to help promote his sales
查看完整题目与答案
【单选题】I invited my teachers __________ my birthday party.
A.
to join in             
B.
join in        
C.
to join
查看完整题目与答案
【判断题】对于长度大于生产线宽度,同时运输亦超高的竖向板,必须长边侧向翻板起模和运输,到现场则必须将板旋转90°。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If I ____ you, I ____ the army. [     ]
A.
am, would join
B.
were, would join
C.
am, will join
D.
were, will join
查看完整题目与答案
【单选题】She wanted to join the group of men______was to explore the mysteries of the planets.
A.
whom
B.
which
C.
whose work
D.
their work
查看完整题目与答案
【单选题】I decided to join the fitness club.
A.
wanted to join
B.
thought to join
C.
made up my mind to join
查看完整题目与答案
【单选题】I want to _____ the chess club. [     ]
A.
join
B.
join in
C.
join to
D.
join for
查看完整题目与答案
【简答题】If I ____you, I _____the army. A, am, would join B. were ,would join C am, will join D. were ,will join
查看完整题目与答案
【简答题】When I was young, I wanted to be a teacher if I grew up, simply because I wanted to write on the chalkboard! My teacher seemed to be the __ 26 ___ printers, curving their letters just so, and I wanted...
查看完整题目与答案
【单选题】“You can’t join us today ,can you?'“_____.'
A.
Yes,I can join you tomorrow
B.
Yes,I can’t join you tomorrow
C.
No, but I can join you tomorrow
D.
No,I can join you tomorrow
查看完整题目与答案
相关题目：
【单选题】Louise decided to lend money to the author because______.
A.
she wanted to join his company
B.
she knew he would build a team
C.
she knew his plan would succeed
D.
she wanted to help promote his sales
查看完整题目与答案
【单选题】I invited my teachers __________ my birthday party.
A.
to join in             
B.
join in        
C.
to join
查看完整题目与答案
【判断题】对于长度大于生产线宽度,同时运输亦超高的竖向板,必须长边侧向翻板起模和运输,到现场则必须将板旋转90°。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If I ____ you, I ____ the army. [     ]
A.
am, would join
B.
were, would join
C.
am, will join
D.
were, will join
查看完整题目与答案
【单选题】She wanted to join the group of men______was to explore the mysteries of the planets.
A.
whom
B.
which
C.
whose work
D.
their work
查看完整题目与答案
【单选题】I decided to join the fitness club.
A.
wanted to join
B.
thought to join
C.
made up my mind to join
查看完整题目与答案
【单选题】I want to _____ the chess club. [     ]
A.
join
B.
join in
C.
join to
D.
join for
查看完整题目与答案
【简答题】If I ____you, I _____the army. A, am, would join B. were ,would join C am, will join D. were ,will join
查看完整题目与答案
【简答题】When I was young, I wanted to be a teacher if I grew up, simply because I wanted to write on the chalkboard! My teacher seemed to be the __ 26 ___ printers, curving their letters just so, and I wanted...
查看完整题目与答案
【单选题】“You can’t join us today ,can you?'“_____.'
A.
Yes,I can join you tomorrow
B.
Yes,I can’t join you tomorrow
C.
No, but I can join you tomorrow
D.
No,I can join you tomorrow
查看完整题目与答案