皮皮学，免费搜题
登录
搜题
【单选题】
25℃时，已知下列三种金属硫化物的积常数（Ksp）分别为：Ksp（FeS）=6.3×10 -18 ；Ksp（CuS）=1.3×10 -36 ；Ksp（ZnS）=1.6×10 -24 ．下列关于常温时的有关叙述正确的是（ ）A.
硫化锌、硫化铜、硫化亚铁的溶解度依次增大
B.
将足量的ZnSO 4 晶体加入到0.1mol/L的Na 2 S溶液中，Zn 2+ 的浓度最大只能达到1.6×10 -23 mol/L
C.
除去工业废水中含有的Cu 2+ ，可采用固体FeS作为沉淀剂
D.
向饱和的FeS溶液中加入FeSO 4 溶液后，混合液中c（Fe 2+ ）变大、c（S 2- ）变小、但Ksp（FeS）变大
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】试简述补料分批培养的优点
【单选题】Before his death last year, Professor Talline decided that he _________ leave $100,000 to iris university.
A.
can
B.
would
C.
may
D.
shall
【简答题】Before his death, ______had gained a position as America s first systematic philosopher.
【单选题】一组晶面间距从大到小的顺序:2.02Å,1.43Å,1.17Å,1.01 Å,0.90 Å,0.83Å,0.76 Å......,用波长为λkα=1.94Å的铁靶照射时,产生衍射的晶面组有( )个。
A.
3
B.
4
C.
5
D.
6
【单选题】How does the ending of the story indicate the elevation of Harry?
A.
Before his death, he dreams of climbing the summit of Kilimanjaro in a helicopter
B.
Before his death, he is able to fight death many times over
C.
Before his death, he is reunited with the woman he loves
D.
Before his death, he is able to see his fellow man
【单选题】Attached to his ________ was a letter he had written to his wife just days before his death. [ ]
A.
will
B.
way
C.
hope
D.
idea
【简答题】Before his death last year, Professor Johnson decided that he ________ leave $ 2,000,000 to his university. A) can B) would C) may D) shall
【单选题】The case of his death is being ________ and will be found out before long. [ ]
A.
looked up
B.
looked for
C.
looked into
D.
looked on
相关题目：
参考解析：
知识点：
题目纠错 0
发布
