【单选题】【消耗次数:1】
向硝酸银溶液中滴入铬酸钾,会得到()。
砖红色沉淀
淡黄色溶液
红棕色沉淀
棕黄色溶液
参考答案:
复制
纠错
相关题目
【单选题】 向硝酸钡溶液中滴入铬酸钾,会得到()。
①  红棕色沉淀
②  柠檬黄色溶液
③  砖红色沉淀
④  淡黄色溶液
【判断题】 硝酸银标准溶液需保存在棕色瓶中
①  正确
②  错误
【判断题】 硝酸银标准溶液应装在棕色碱式滴定管中进行滴定
①  正确
②  错误
【单选题】 向一定量的下列物质的溶液中逐滴加入氢氧化钠溶液,先生成白色沉淀,后沉淀逐渐溶解,这种物质是(  )。
①  <img class="kfformula" src="20200629/1593415849981401.png" data-latex="MgS{O}_{4}" width="76" height="31"/>
②  <img class="kfformula" src="20200629/1593415849559692.png" data-latex="{A1C1}_{3}" width="58" height="33"/>
③  <img class="kfformula" src="20200629/1593415849925071.png" data-latex="{FeC1}_{3}" width="58" height="35"/>
④  <img class="kfformula" src="20200629/1593415849354494.png" data-latex="NaA1{0}_{2}" width="69" height="36"/>
【单选题】 乙炔与酸性高锰酸钾溶液反应,溶液中出现( )色的沉淀。
①  棕黑色
②  棕黄色
③  棕红色
④  棕褐色
【单选题】 在苯酚溶液中,滴入几滴FeCl3溶液,溶液立即呈()。
①  紫色
②  黄色
③  绿色
④  蓝色
【单选题】 将<img class="kfformula" src="20200623/1592893281553384.png" data-latex="{Na}_{2}{O}_{2}" width="84" height="32"/>投入到<img class="kfformula" src="20200623/1592893281760005.png" data-latex="{FeCI}_{2}" width="69" height="31"/>溶液中,可观察到的现象是()。①生成白色沉淀②生成红褐色沉淀③有气泡产生④溶液变成棕黄色
①  ③④
②  ①②
③  ①②④
④  ②③
【单选题】 下列物质和AgNO3溶液反应后,产生黄色沉淀并不溶于HNO3的是(  )
①  NaBr
②  NaI
③  Na3PO4
④  KCl
【单选题】 溶液中有微量的铵根离子存在时,滴入奈斯勒试剂,生成()。
①  淡黄色溶液
②  红棕色沉淀
③  棕黄色溶液
④  血红色溶液
【单选题】 把NaOH溶液和CuSO4溶液加入尿液中,微热后观察到红色沉淀,说明该尿液中含有()。
①  葡萄糖
②  食醋
③  食盐
④  白酒
随机题目
【单选题】 19.The church is the _____building in the town.
①  eldest
②  ancient
③  oldest
④  old
【单选题】 29. I remember __________ for the job, but I forget the exact amount.
①  to be paid
②  get paid
③  that I receive pay
④  being paid
【单选题】 10. The coffee is very weak. I like it a bit ______.
①  strong
②  heavier
③  stronger
④  heavy
【单选题】 24.Don’t worry about Susan. She hasn’t been _____________ she pretends.
①  as lucky as
②  as unlucky as
【单选题】 4.After a delay of two hours, it was finally announced that the passengers could now _______ the plane.
①  get for
②  get up
③  go to
④  board
【单选题】 26.The meeting was put off because we ________ a meeting without John.
①  objected having
②  were objected to having
③  objected to have
④  objected to having
【单选题】 2. The cause of ______ disease is the economic and educational backwardness of the country.
①  long
②  infectious
③  bad
④  boring
【单选题】 28. Sally contributed a lot to the project, but she never once accepted all the ________ for herself.
①  credit
②  attention
③  focus
④  award
【单选题】 11.You hardly phone me. Why don’t you phone me _______.
①  often
②  . more often
③  always
④  more always
【单选题】 1. Drug testing at work and in school has almost become _______ in many American cities.
①  routine
②  infectious
③  terrific
④  valuable