您所在的当前位置：高中化学试题 >

原电池原理

> 瑞典ASES公司设计的曾用于驱动潜艇的液氨-液氧燃料电池示意图，有关说法正确的是 A．电池工作时，Na＋向负极移动 B．电子由电极2经外电路流向电极1 C．电池总反应为：4NH3+3O2＝2N2+6H2O D．电极2发生的电极反应为：O2+ 4H + + 4e－＝2H2O

问题：

发布时间：2024-09-11

瑞典ASES公司设计的曾用于驱动潜艇的液氨-液氧燃料电池示意图，有关说法正确的是

A．电池工作时，Na^＋向负极移动

B．电子由电极2经外电路流向电极1

C．电池总反应为：4NH₃+3O₂＝2N₂+6H₂O

D．电极2发生的电极反应为：O₂+ 4H ⁺ + 4e^－＝2H₂O

参考答案：

提问用户：Gc***1qO

可能感兴趣的题目：

1 阅读理解。 The traditional distinction between products that satisfy needs and those satisfy wants is no longer adequate to describe classes of products. In today"s prosperous societies, the distinction has become unclear because so many wants have been turned into needs. A writer, for instance, can work with paper and pencils. These are legal needs for the task. But the work can be done more quickly and efficiently with a word processor. Thus a computer is soon viewed as a need rather than a want. In the field of marketing, consumer goods are classed according to the way in which they are purchased. The two main classes are convenience goods and shopping goods. Two lesser types are specialty goods and unsought (主动提供的) goods. It must be emphasized that all of these types are based on the way shoppers think about products, not on the nature of the products themselves. What is regarded as a convenience item in France (wine, for example) should be a specialty goods in the United States. People do not spend a great deal of time shopping for such convenience items as groceries, newspapers, toothpaste, aspirin, and candy. The buying of convenience goods may be done routinely, as some families buy groceries once a week. Such regularly purchased items are called staples. Sometimes convenience products are bought without enough thinking; someone has a sudden desire for an ice cream sundae(圣代) on a hot day. Or they may be purchased as emergency items. Shopping goods are items for which customers search. They compare prices, quality, and styles, and may visit a number of stores before making a decision. Buying an automobile is often done this way. Shopping goods fall into two classes; those that are recognized as basically the same and those that are regarded as different. Items that are looked upon as basically the same include such things as home appliances, television sets, and automobiles. Having decided on the model desired, the customer is primarily interested in getting the item at the most favorable price. Items regarded as essentially different include clothing, furniture, and dishes. Quality, style and fashion will either take precedence(优先) over price, or they will not matter at all. 1. It can be learned from the first paragraph that ______. A. a writer needs a word processor B. needs and wants can"t be separated clearly C. the way to distinguish the products is unimportant D. a computer is a need rather than a want 2. The example of wine is used to illustrate that ______. A. goods are classified differently in different countries B. the types of the product lie on the people rather than its nature C. Frenchmen often drink but Americans sometimes do D. one product may belong to many types 3. Staples are items that ______. A. are convenient to purchase B. are purchased without enough thinking C. people "want but don"t need" D. people are in constant need of 4. Shopping goods that are considered as basically the same are those that ______. A. consumers don"t care where to buy them B. consumers spend much time searching for C. satisfy similar needs of the consumer D. can be found in nearly every shop
2 ㈠现有60℃的饱和NaCl溶液，与该溶液有关的量有：①水的质量；②溶液中溶质NaCl的质量；③NaCl的质量分数；④60℃时NaCl的溶解度；⑤溶液的质量．用序号填空：（1）将该饱和溶液稀释，不变的量有 ②④；（2）将该饱和溶液降温至20℃，一定变化的量有 ②③⑤．㈡从H、C、O、Na四种元素中，选择适当的元素组成符合下列要求的物质，并用化学式填空：（1）俗称“小苏打”的物质是 NaHCO3；（2）我国著名化工学家侯德榜研究成功的“侯氏制碱法”所生产的“碱”是 Na 2CO 3．
3 I will stay with you the doctor comes to help you. A．after B．if C．unless D．until
4 Peter lost his friend’s book , He felt very sad. Kate broke her mom’s favorite cup【小题1】She was so sorry for her mistake. We all make mistake because we’re human.And it’s not always easy to get on well with everyone all the time. Sometimes we hurt people’s feelings although we don’t do it on purpose. Sometimes we hurt people’s feelings on purpose 小题1:So we apologize （道歉）. An apology tells someone that we’re sorry for our mistakes. It’s a way to shoe that we’ll try to do better in future. Apologies are one of the tools to build good friendships and relationships.When you say “I’m sorry”, you probably feel bad because what you did or said hurt another person._ 小题2:,you’re also saying that you respect the other person,and care about his or her feelings. Apologizing shows you have empathy（同感）。 After apologizing , you might feel a little better【小题4】When you apologize in a caring way , you might feel good because you are trying to make things right again.
5 补写出下列各篇名句中的空缺部分。 (1)、黑云压城城欲摧，＿＿＿＿＿＿。（李贺《雁门太守行》（2）、——————，宫阙万间都做了土。（张养浩《山坡羊.潼关怀古》）（3）、——————-，化作春泥更护花。（龚自珍《己亥杂诗》）（4）、嘈嘈切切错杂弹，————————。（白居易《琵琶行》）（5）受任于败军之际，————————。（诸葛亮《出师表》) （6）、无丝竹之乱耳，——————-。（刘禹锡《陋室铭》）
6 如图是某草原生态系统食物网示意图，据图回答问题．（1）图中生产者是______，它能进行______制造有机物．（2）该食物网中有______食物链．（3）图中消费者中，不属于哺乳动物的是蛇和______．（4）图中兔与鼠之间属于______关系． A．捕食 B．竞争 C．合作 D．寄生．
7 人生保护阶段保持心理健康应注意的内容有 A 正视现实，适应环境 B 调整情绪，加强修养 C 营养平衡、饮食合理搭配 D 劳逸结合，培养广泛的兴趣 E 调整器官的生理功能.恢复精力和体力
8 已知直线l： y= 1 2 x- 5 4 ，抛物线C：y 2=2px（p＞0）的顶点关于直线l的对称点在该抛物线上，求抛物线C的方程．
9 开国大典上，54门礼炮齐鸣28响，广场欢声雷动，庆祝新中国的诞生。其中“28响”的寓意是：（） A．没有什么寓意 B．代表中国共产党成立并领导中国艰苦斗争的28年 C．因为28这个数字比较吉祥 D．代表国民党在中国28年的反动统治被摧毁
10 下列现象中能说明物体的分子在不停地做无规则运动的是（　　） A．打扫房间时尘土飞扬 B．水从高处流到低处 C．放在空气中的铁器过一段时间会生成锈 D．在一杯白开水中放入盐，这杯水会变咸