(10分)如图所示:已知甲池的总反应式为：2CH3OH+3O2+4KOH2K2C_爱下问搜题

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问题填空题

(10分)如图所示:已知甲池的总反应式为：2CH₃OH+3O₂+4KOH 2K₂CO₃+6H₂O

（1）请回答图中甲、乙两池的名称。甲池是装置，乙池是装置。

（2）B（石墨）电极的名称是。在图中标明电子移动的方向。

（3）通入O₂的电极的电极反应式是。

（4）乙池中反应的化学方程式为。

（5）当乙池中A（Fe）极的质量增加5.40g时，甲池中理论上消耗O₂ mL（标准状况下）

答案

(14分)（1）原电池(化学能转变成电能) 电解池(电能转变成化学能)（2）阳极

（3）O₂+2H₂O＋4e^－＝4OH^－

（4）4AgNO₃+2H₂O4Ag+4HNO₃+O₂↑ （5）280

（1）根据装置可知，甲是原电池，乙是电解池。

（2）原电池中负极失去电子，正极得到电子。所以甲中通入甲醇的是负极，通入氧气的是正极。则B是阳极。电子从原电池的负极经导线传递到电解池的阴极，从电解池的阳极经导线传递到原电池的正极。

（3）氧气得到电子，电极反应式为O₂+2H₂O＋4e^－＝4OH^－。

（4）乙中阴极氢离子放电生成氢气，阳极是银离子放电生成银，所以总反应式为

4AgNO₃+2H₂O4Ag+4HNO₃+O₂↑。

（5）铁电极形成的是银，物质的量是5.40g÷108g.mol＝0.05mol，转移电子是0.05mol，所以根据电子得失守恒可知，消耗氧气是0.05mol÷4＝0.0125mol，标准状况下的体积是0.0125mol×22.4L/mol＝0.280L＝280ml。

完形填空

Miss Green was watching TV. Suddenly the program stopped. “Now we broadcast an important notice from the 36 : At about nine this evening, an old woman of 79, named Mrs. Humney, was    37  and killed by a robber wearing a green coat. Those who can supply any clue(线索) are requested to 38 to the police.” The 39 news made the lonely girl filled with 40 . She couldn’t help looking around. But she didn’t   41 that a man was already behind the door.
Suddenly the man 42 before Miss Green. The girl didn’t know what to   43 . “Just put your necklace on the table, then I’ll 44 whether I shall be safe to stay here for the night.” said the robber. That made her even more terrified, but she tried to   45 herself.
Just then there came the whistle of a police car. Then 46   the door bell. The man said with a pistol(手枪) 47 the girl’s back, “Don’t 48 the door. Never let him in.” But the girl got    a(n) 49 . She asked the man outside the door, “Who is it?” “I’m Bull. Is there 50  unusual here?” “No , there isn’t.” Immediately she added   51 , “Only   52 and I are here.” “Good night.” Bull replied in the same loud voice.
A few minutes later, the sound of the 53 died away. “It’s well done,” the robber laughed. Almost at the same time the glass was   54 into pieces. The policemen 55 into the room and caught the robber.
“Miss Green, what you said made us take action right away,” said Bull, “for we know that you have no brother.”

B．my neighbor

单项选择题共用题干题

患者男，45岁。主因右胁肋部皮肤疼痛、起疱3天来诊。局部皮肤灼热，刺痛剧烈，红赤，有簇集水疱，高出皮肤，疱壁紧张，呈带状分布。烦躁易怒，口苦咽干，渴喜冷饮，小便短赤，大便干结，舌质红。舌苔黄厚，脉弦滑数。

本案例的诊断是（）。

A.皮炎

B.瘾疹

C.蛇串疮

D.风疹

E.丹毒