您所在的当前位置：高中化学试题 >

离子共存

> 在强酸性溶液中能大量共存，且溶液为无色透明的离子组（　　） A．K+、Na+、AlO2-、NO3- B．NH4+、Al3+、NO3-、SO42- C．K+、NH4+、NO3-、I- D．K+、Na+、NO3-、HSO3-

问题：

发布时间：2024-09-07

在强酸性溶液中能大量共存，且溶液为无色透明的离子组（　　）

A．K⁺、Na⁺、AlO₂^-、NO₃^- B．NH₄⁺、Al³⁺、NO₃^-、SO₄^2-

C．K⁺、NH₄⁺、NO₃^-、I^- D．K⁺、Na⁺、NO₃^-、HSO₃^-

参考答案：

提问用户：kp***bFz

可能感兴趣的题目：

1 已知函数f（x）=sinx-cosx，x∈R．（1）求函数f（x）的最小正周期；（2）若函数f（x）在x=x 0处取得最大值，求f（x 0）+f（2x 0）+f（3x 0）的值．
2 下列说法正确的是 ( ) A．因SiO2不溶于水，故H2SiO3不是SiO2对应的酸，或者说SiO2不是H2SiO3的酸酐 B．CO2通入水玻璃(Na2SiO3溶液)可以得到硅酸 C．因为高温时SiO2与Na2CO3反应生成CO2，故硅酸的酸性比碳酸强 D．因为NH3·H2O是弱碱，所以不能用氨水与FeCl3溶液反应制取Fe(OH)3
3 灯泡接入电路中发光时，灯丝的温度高达2000℃，而跟灯泡相连的导线却不怎么发热，原因是 A.导线是铜制的，它不可能发热 B.通过导线的电流比通过灯丝的电流小，所以导线上产生的热量少 C.导线的电阻率比灯丝电阻率小，所以导线上产生的热量少 D.电线上的铜丝很细，所以导线上产生的热量少
4 影响的甘肃新疆、河套灌区主产区农业生产的主要因素是 A.热量 B.水源 C.降雨量 D.土壤
5 I’m not sure ________ he will come back home tomorrow or not. A.when B.what C.whether D.where
6 不定项选择如图所示，一轻杆两端分别固定a、b两个半径相等的光滑金属球，a球质量大于b球质量。整个装置放在光滑的水平面上，将此装置从图示位置由静止释放，则（） A．在b球落地前瞬间，a球的速度方向向右 B．在b球落地前瞬间，a球的速度方向向左 C．在b球落地前的整个过程中，轻杆对b球的冲量为零 D．在b球落地前的整个过程中，轻杆对b球做的功为零
7 （8分）离地高h＝500m的空中自由落下一个小球，不计空气阻力，取g＝10m/s 2。求：（1）小球落到地面经过的时间t 1；（2）小球落地前最后1秒内的位移Δh。
8 阅读理解。 I arrived late one night on a business trip, so I decided to have dinner in the hotel. As I was finishing my meal, an elderly couple came in to dine. They were holding hands and had lovely smiles on their faces. They sat three tables from me. I was amazed at the love they showed for each other. It seemed to strike home all the more, because it was shortly after ending a 20-year marriage and I still had pain in my heart. My waiter was also their waiter. As I paid my bill, I inquired as to what their bill was. He informed me, and I gave him $40 to pay their bill. He asked if I knew them and I told him "No, I just wanted to repay them for the love that they were showing to each other," and then I departed. The next day I entered the restaurant to dine before my departure. After I had been seated, the waiter who served me the night before told me that the strangest thing happened after I left the restaurant. When the elderly couple went to pay for their meal, they were informed that it had been paid. When they inquired who had done this, the hostess told them they had no idea who I was, just retelling what I said. The couple were amazed. They looked around, asked for the bill of two young couples who were seated together, paid their bill and departed, saying "Love begets Love" to the amazement of the hostess and waiter. I smiled and said "That"s nice," and proceeded to order my meal. About 45 minutes later, I finished my meal and was about to head out, but my waiter was nowhere to be found. I waited and waited and finally walked over to the hostess stand and explained that I needed to pay for my meal and hurry to the airport. She smiled and explained that I would not have to pay for my meal, because both the waiter and she felt compelled to pay my bill due to the joy that was brought to the faces of the elderly couple and the amazement of the young couples. When I told her that they didn"t have to do that, she said with a smile "Love begets Love." 1. The writer"s purpose of writing the passage is to . A. suggest love never dies B. share an interesting experience C. encourage us to help people in need D. prove a show of love really makes a difference 2. Why did the elderly couple pay the bill of the two young couples? A. Because they were always ready to help poor people. B. Because they were happy to pass the love they gained.C. Because they invited the young people to the meal. D. Because they didn"t want to take the advantage of the writer"s generosity. 3. Which of the following has the closest meaning to the underlined word "compelled" in this passage? A. obliged B. forced C. satisfied D. determined 4. What can be inferred from the story? A. The writer did all this to prove his belief in love. B. The young couples paid the bill of other customers in the restaurant. C. The waiter left on purpose and made the writer stay alone to test him. D. The love between the elderly couple deeply touched the writer who was single. 5. Which of the following proverbs can best explain the theme of the story? A. A good beginning makes a good ending. B. Where there is love, there is life. C. As a man sows, so shall he reap (收获). D. Love me, love my dog.
9 The dog, if trained ____, will be made a good watch-dog one day． A．properly B．hopefully C．personally D．usually
10 某电阻100Ω，通电10s，通过电阻的电流为2A，则电阻上产生热量是 A.1000J B.2000J C.3000J D.4000J

在强酸性溶液中能大量共存，且溶液为无色透明的离子组（ ） A．K+、Na+、AlO2-、NO3- B．NH4+、Al3+、NO3-、SO42- C．K+、NH4+、NO3-、I- D．K+、Na+、NO3-、HSO3-

可能感兴趣的题目：

在强酸性溶液中能大量共存，且溶液为无色透明的离子组（　　）

A．K⁺、Na⁺、AlO₂^-、NO₃^- B．NH₄⁺、Al³⁺、NO₃^-、SO₄^2-

C．K⁺、NH₄⁺、NO₃^-、I^- D．K⁺、Na⁺、NO₃^-、HSO₃^-