您所在的当前位置：高中化学试题 >

离子共存

> 下列各组离子，无色透明且能大量共存的是（　　） A．Cl-、K+、Fe3+、NO3- B．CO32-、Na+、Cl-、K+ C．Fe2+、NO3-、Mg2+、OH- D．SO42-、Ag+、NH4+、Cl-

问题：

发布时间：2024-09-09

下列各组离子，无色透明且能大量共存的是（　　）

A．Cl^-、K⁺、Fe³⁺、NO₃^- B．CO₃^2-、Na⁺、Cl^-、K⁺

C．Fe²⁺、NO^3-、Mg²⁺、OH^- D．SO₄^2-、Ag⁺、NH₄⁺、Cl^-

参考答案：

提问用户：HJ***2Cg

可能感兴趣的题目：

1 下列有关原子的叙述中，错误的是 A.原子是化学变化中的最小微粒 B.原子是构成物质的一种微粒 C.原子由质子和中子构成 D.原子的质量主要集中在原子核上
2 已知θ是三角形的内角，且 sinθ= 2 2 ，则角θ等于（　　） A． π 3 B． π 4 C． π 4 或 π 6 D． π 4 或 3π 4
3 完形填空。 I shall never forget the day when the earthquake took place. The time was 5:15 in the afternoon and I was driving along the road to _ 1 my daughter from school. Our plan was to go 2 together. I had finished work at about 4 o"clock and then 3 to the post office. Then I stopped 4 at a shop in order to get some 5 fruit. We like to have some fruit to eat after our swim. I was driving along a high road on my way to the school. Over my road was another way for cars coming the other way. I was 6 so I put the bag of apples in the seat 7 me and started to eat one. Suddenly I saw the cars in front of me start to move from side to side. I slowed down. Then 8 started to shake. I didn"t know what was happening. 9 something had gone wrong with my car. I drove 10 slower. I stopped the car and at the same moment the road fell onto the cars in front of me. I found myself in the dark. I couldn"t move. The bottom parts of both my legs and my 11 were hurting badly and I couldn"t move them. All around me was 12 . But below me I could hear shouts and a lot of noise. Then I 13 what had happened. I had been in an earthquake. For about two hours nobody came. Luckily I could 14 the bag of apples, so at least I had plenty to eat. Then I 15 people climbing towards me. A team of people had come to see if anyone was under the broken 16 . I called out " I"m here!" I heard a shout, soon 17 climbed to the side of the bridge near my car, "How are you doing?" he asked. "Not too bad," I said, " but my feet and legs 18 as if they"re broken." "We"ll have you out of there just as 19 as we can," he said. They didn"t get me out 20 the next morning. I had been in my car for 14 hours. ( )1. A. take ( )2. A. swimming ( )3. A. arrived ( )4. A. off ( )5. A. dried ( )6. A. happy ( )7. A. before ( )8. A. my car ( )9. A. Perhaps ( )10. A. much ( )11. A. feet ( )12. A. dark ( )13. A. was told ( )14. A. see ( )15. A. heard ( )16. A. railway ( )17. A. a stranger ( )18. A. feel ( )19. A. fast ( )20. A. on B. bring B. shopping B. came B. away B. fresh B. excited B .below B. my hands B. Surely B. more B. arms B. quiet B. found out B. hold B. saw B. road B. a friend B. look B. easy B. to C. get C. climbing C. got C. over C. expensive C. surprised C. beside C. my feet C. Suddenly C. even C. hands C. cold C. discovered C. catch C. found C. car C. my daughter C. seem C. soon C. until D. send D. skating D. gone D. here D. hard D. hungry D. behi nd D. the road D. Quickly D. a little D. fingers D. noisy D. remembered D. reach D. recognized D. trees D. a driver D. appear D. possible D. after
4 ________ fish do you have? A.How many kilos of B.How much kilos of C.How much kilo D.How many kilos
5 不定项选择引力常量很小，说明了（） A．万有引力很小 B．万有引力很大 C．很难观察到日常接触的物体间有万有引力，是因为它们的质量很小 D．只有当物体的质量大到一定程度时，物体之间才有万有引力
6 原子核外有19个电子的某种原子，假若它失去一个电子后，剩余部分 A.不显电性 B.显正电性 C.显负电性 D.呈电中性
7 甲乙两物体质量之比m 甲：m 乙=6:1，甲从高H处自由落下的同时乙从高3H处自由落下，不计空气阻力，以下说法正确的是 A．甲、乙在下落过程中，同一时刻二者速度相同 B．甲落地时，乙距地面的高度为H C．甲落地时，乙的速度大小为 D．甲、乙在空中的运动时间之比1:3
8 已知、是两单位向量，下列命题中正确的是（） A． B． C．　 D．
9 如图所示，一恒力 F与水平方向夹角为θ，作用在置于光滑水平面上，质量为 m的物体上，作用时间为 t，则力 F的冲量为 [ ] A． Ft B． mgt C． Fcosθ t D．( mg-Fsinθ) t
10 --You’ve been driving for hours．Shall I ________？ --No, that’s OK．I enjoy driving and I know you hate it, especially on the highway． A．take back B．take on C．take over D．take up

下列各组离子，无色透明且能大量共存的是（ ） A．Cl-、K+、Fe3+、NO3- B．CO32-、Na+、Cl-、K+ C．Fe2+、NO3-、Mg2+、OH- D．SO42-、Ag+、NH4+、Cl-

可能感兴趣的题目：

下列各组离子，无色透明且能大量共存的是（　　）

A．Cl^-、K⁺、Fe³⁺、NO₃^- B．CO₃^2-、Na⁺、Cl^-、K⁺

C．Fe²⁺、NO^3-、Mg²⁺、OH^- D．SO₄^2-、Ag⁺、NH₄⁺、Cl^-