您所在的当前位置：高中化学试题 >

铵盐

> 下列关于铵盐的叙述中正确的是 [ ] ①所有铵盐中，氮元素化合价都是－3价 ②所有铵盐都溶于水 ③铵态氮肥不宜与草木灰混合使用 ④铵盐都是离子化合物 ⑤铵盐都能与碱反应，不能与酸反应 A．①③④ B．②③④ C．①②③④ D．①②③④⑤

问题：

发布时间：2024-09-07

下列关于铵盐的叙述中正确的是
[     ]

①所有铵盐中，氮元素化合价都是－3价
②所有铵盐都溶于水
③铵态氮肥不宜与草木灰混合使用
④铵盐都是离子化合物
⑤铵盐都能与碱反应，不能与酸反应
A．①③④
B．②③④
C．①②③④
D．①②③④⑤

参考答案：

提问用户：oE***CBr

可能感兴趣的题目：

1 如图所示，在光滑的水平地面上，有A、B、C三个物体处于静止状态，三者质量均为 m，物体A的ab部分为半径为 R的光滑1/4圆弧，bd部分水平且粗糙，现让小物体C自a点静止释放，当小物体C到达b点时，物体A将与物体B发生碰撞，且与B粘在一起(设碰撞时间极短)，试求 (1)小物体C刚到达b点时，物体A的速度大小。 (2)如果bd部分足够长，试用文字表述三个物体的最后运动状态。
2 At 7:49 a.m. local time on Wednesday, April 14th, a huge earthquake struck Yushu County in Qinghai, China, described as “end of the earth” in a famous poem of the Tang Dynasty. The earthquake destroyed many houses, cut off power and caused over 2,000 deaths and injuries. On the night when the earthquake happened, many survivors had to sit or lie on the ground in terrible darkness. Some brought their own tents and others turned on the lights of motorcycles. It seemed that the earth was at an end. But their natural character made them get together to fight the early spring’s cold nights. Facing the disaster, they chose to be stronger and standing still and firmly like Yushu, the name of their hometown meaning “Standing like Trees”. The disaster drew much attention both at home and abroad. Our country leaders ordered rescuers（营救人员） to value every life and never to give up. Thousands of rescuers and medical teams rushed to Yushu from many areas of China, bringing machines, medicines and something necessary to the quake-hit town. They entered every village to search for survivors. Governments, organizations and volunteers are offering money and materials to the areas. We believe that under the leadership of the Central Government, people in the disaster areas are sure to restore production and rebuild homeland as soon as possible. And the overall victory can be achieved in the earthquake rescue work. 小题1: In Paragraph 2, the writer refers to the meaning of “Yushu” to show that _______. A．the strong trees stand still to fight the early spring’s cold nights B．some trees were cut down to make tents to live through the disaster C．the big tree standing still brings the local people good luck D．people there are brave and strong when facing the earthquake 小题2: Which of the following is TRUE according to the text? A．Yushu, a young town, was destroyed in the terrible earthquake. B．A huge earthquake once hit Yushu County in the Tang Dynasty. C．The whole nation does its best to help rebuild the new homeland. D．There was still electricity after the earthquake struck the town. 小题3: The underlined word “restore” in Paragraph 4 probably means _______. A．战胜 B．储存 C．恢复 D．修理
3 “它因模仿一部分西方器物而异于传统，又因主其事者以新卫旧的本来意愿而难以挣脱传统。结果是‘东一块西一块的进步’，零零碎碎的。是零买的，不是批发的。”下列历史人物的思想特点与上述材料的描述相符的是 [ ] A、林则徐 B、曾国藩 C、洪仁玕 D、康有为
4 图所示的实例中，目的是为了减小压强的是 A.书包带做的很宽 B.盲道由凸起的棱和圆组成 C.饮料管的一端削成斜口 D.图钉的尖的面积很小
5 如图所示，足够长的两平行金属板正对着竖直放置，它们通过导线与电源E、定值电阻R、开关S相连。闭合开关后，一个带电的液滴从两板上端的中点处无初速度释放，最终液滴落在某一金属板上。下列说法中正确的是 [ ] A．液滴在两板间运动的轨迹是一条抛物线 B．电源电动势越大，液滴在板间运动的加速度越大 C．电源电动势越大，液滴在板间运动的时间越长 D．定值电阻的阻值越大，液滴在板间运动的时间越长
6 老子说：“天下皆知美之为美，斯恶矣；皆知善之为善，斯不善矣。”这句话主要说明 A．矛盾双方既相互对立又相互依存 B．矛盾双方既相互排斥又相互斗争 C．主要矛盾和次要矛盾在一定条件下可以相互转化 D．矛盾主要方面和矛盾次要方面在一定条件下可以相互转化
7 “回到纺车去”是甘地经济思想的中心口号，开展家庭纺织运动成为他的经济自主运动的主要内容。对此理解不正确的是 [ ] A、说明甘地放弃政治斗争，注重经济斗争 B、有利于号召妇女加入民族独立运动 C、是甘地非暴力不合作主张的体现 D、有利于振兴印度经济
8 _______, a learned man makes fewer mistakes in life than a man without knowledge. A．In general B． As general C． On general D．At general
9 Neighbors rescued a woman from her burning home early Monday morning，and three firefighters were hurt putting out the flames in Green Bay. The fire was discovered around 4 o"clock at a three-story home in the South Quincy Street on the city"s east side. Investigators(调查者) say 68-year-old Mary Taylor lives there with her two dogs. “I got out of bed and went to the front window and could hear somebody was yelling(叫喊)，‘Fire!’” Curt Dworak said.When he realized what was happening, he threw on some clothes and ran to help. “I was just hoping Mary wasn"t in there， but her car was in the driveway，so I just reacted,” he said, “I just broke the glass and then went in through the window.” Dworak yelled for Mary but got no response. As he searched，the fire grew and debris(碎片) started falling around him. I didn"t know what to do. I yelled for her a couple more times，and then I heard her. Disoriented(分不清方向的)and unable to move, Mary was sprawling(趴) on the floor in the back of her house，so Dworak picked her up and carried her to safety. Dworak, who has been hailed as a hero by Green Bay Fire Department but shrugged of the praise，said，“They would have done the same thing. Mary is a nice lady，and how could you live with yourself if you didn"t do something like that?” Mary was up and talking before she was taken to the hospital to be checked out. Dworak escaped without a thin cut. 小题1: As soon as Dworak realized there was a big fire，he . A．went to his front window and stood watching B．put on his clothes quickly and rushed there C．searched for Mary"s crying in her room D．put away his clothes and jumped off his house 小题2: The sentence “ but her car was in the driveway” in Paragraph 3 implies(暗指) that . A．Mary was just in the house. B．Mary"s car was in Dworak"s way. C．Mary"s car was broken. D．Mary"s car was in good condition. 小题3: The underlined Word “ hailed” in Paragraph 5 can be replaced by “ ”. A．named B．checked C．praised D．trained 小题4: What can we learn from the passage? A．It was Dworak who found the fire first. B．Dworak was badly injured by the fire. C．Mary lost consciousness in the flames. D． Mary is friendly to her neighborhood.
10 材料阅读：材料一：2008年以来，由美国次贷危机引发的国际金融危机日趋严峻。11月15日，胡锦涛主席在二十国集团峰会上发表题为《通力合作共度时艰》的重要讲话，表明“中国愿意继续参与维护国际金融稳定、促进世界经济发展的国际合作”。材料二：以“城市，让生活更美好”为主题的上海世博会已于2010年在中国上海成功举办。有192个国家和 50个国际组织参与上海世博会，它吸引了世界各地7000万人次的参观者前往，是至今世界博览上最大规模的一次盛会。一个半世纪的积淀，世博会始终保持旺盛的生命力，而且给人类留下宝贵的精神财富：第一，高举进步的旗帜。追求进步是人类永恒的主题，也是贯穿世博会整个发展进程的主旋律。第二，崇尚创新的精神。创新是推动人类进步不竭的源泉，也是世博会的灵魂。第三，坚持开放的道路。开放、兼容是一个国家和民族走向繁荣、富强的必由之路，促进不同文化的碰撞和融合，加强交流与合作是世博会一如既往的使命。第四，倡导和谐的理念。以建立“以和为贵，以人为本，人与人相敬相爱，人与自然相近相亲”的和谐世界是世博大家庭不灭的理想。材料三：2010年上海世博会以“城市，让生活更美好”的主题，荟萃了当今科学技术与产业技术成果，反映了人类社会对未来可持续发展的愿望，充分展现了人类应对气候变化的低碳理念和实践；上海世博会促进了世界的开放、合作、互利、共赢，推动了世界和平与共同发展；上海世博会成为了世界各国文化的一次精彩对话，推动了世界多元文化的碰撞和融合。（1）结合材料一，运用当代国际社会知识，说明我国主张“通力合作、共度时艰”的政治学依据。 ________________________________________________________________________________________________________________________________________________________________________________________ （2）“世博精神财富”蕴涵了哪些辩证法道理，请加以简要说明。 ________________________________________________________________________________________________________________________________________________________________________________________ （3）根据材料三，运用《文化生活》的相关知识，说明举办上海世博会的意义。 ________________________________________________________________________________________________________________________________________________________________________________________