• 2022-07-24
    为使锅垢中难溶于酸的CaSO4转化为易溶于酸的CaCO3,常用Na2CO3处理,反应式为CaSO4+CO32- [img=34x13]1803d4c04bfcb2a.png[/img]CaCO3+SO42-,此反应的标准平衡常数为
    A: Kθsp(CaCO3 ) / Kθsp(CaSO4 )
    B: Kθsp(CaSO4 ) / Kθsp(CaCO3 )
    C: Kθsp(CaSO4 )·Kθsp(CaCO3 )
    D: [ Kθsp(CaSO4 )·Kθsp(CaCO3 ) ]1/2
  • B

    举一反三

    内容

    • 0

      为使锅垢中难溶于酸的CaSO4转化为易溶于酸的CaCO3,常用Na2CO3处理,反应式为 CaSO4+ CO32 -[img=18x17]1802e2b780c580a.png[/img]CaCO3+SO42-,此反应的标准平衡常数为 ( ) A: KspΘ(CaSO4 ) / KspΘ(CaCO3 ) B: KspΘ(CaCO4 ) / KspΘ(CaSO4 ) C: KspΘ(CaSO4 )KspΘ(CaCO3 ) D: 2KspΘ(CaSO4 )/ KspΘ(CaCO3 )

    • 1

      为使锅垢中难溶于酸的CaSO4转化为易溶于酸的CaCO3,常用Na2CO3处理,反应式为CaSO4+CO32-<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/88320eab77594b6abf0039ab0efe3c57.png" />CaCO3+SO42-,此反应的标准平衡常数为()。 A: K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaSO4)·K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaCO3) B: K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaCO3)/K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaSO4) C: [K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaSO4)·K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaCO3)]1/2 D: K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaSO4)/K<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201911/e8c371ce6b96487e829331bb8dee134f.png" />(CaCO3)

    • 2

      已知 AgCl 的Kϴsp及&#91;Ag(NH3)2&#93;+ 的Kϴf,则反应AgCl +2 NH3→&#91;Ag(NH3)2&#93;+ + Cl- 的标准平衡常数为: ( )‌​‌ A: Kϴsp × Kϴf B: Kϴsp / Kϴf C: Kϴf / Kϴsp D: 1/ Kϴf × Kϴsp

    • 3

      下面不是水垢的是() A: CaCO<sub>3</sub> B: CaSO<sub>4</sub> C: NaCl D: MgCO<sub>3</sub>

    • 4

      对于A、B两种难溶盐,若A的溶解度大于B的溶解度,则必有( )。A. K°SP(A)>K°SP(B) ;B. K°SP(A)<K°SP(B);C. K°SP(A)≈K°SP(B);D.不一定 A: K°SP(A)>K°SP(B) B: K°SP(A)<K°SP(B) C: K°SP(A)≈K°SP(B) D: 不一定