在电极反应中,其他条件不变,离子的浓度减小一半,值不变的是:( )
A: Cu[img=17x22]1803dd6126954b7.png[/img]+2e=Cu
B: Br[img=7x22]1803dd613036718.png[/img]+2e=2 Br [img=11x21]1803dd6138b5a1c.png[/img]
C: 2H[img=11x21]1803dd614135887.png[/img]+2e=H[img=7x22]1803dd6148ff8b1.png[/img]
D: Cu[img=17x22]1803dd6126954b7.png[/img]+e=Cu[img=11x21]1803dd614135887.png[/img]
A: Cu[img=17x22]1803dd6126954b7.png[/img]+2e=Cu
B: Br[img=7x22]1803dd613036718.png[/img]+2e=2 Br [img=11x21]1803dd6138b5a1c.png[/img]
C: 2H[img=11x21]1803dd614135887.png[/img]+2e=H[img=7x22]1803dd6148ff8b1.png[/img]
D: Cu[img=17x22]1803dd6126954b7.png[/img]+e=Cu[img=11x21]1803dd614135887.png[/img]
举一反三
- 在电极反应中,其他条件不变,离子的浓度减小一半,φ[img=11x21]1803dd564146d28.png[/img]值不变的是( )。 A: Cu[img=17x22]1803dd5649f13af.png[/img] + 2 e[img=11x21]1803dd565317d13.png[/img] = Cu B: I[img=7x22]1803dd565cb1434.png[/img] + 2 e[img=11x21]1803dd56658b4c0.png[/img] = 2I[img=11x21]1803dd566e62490.png[/img] C: 2H[img=11x21]1803dd56764d35d.png[/img] + 2 e[img=11x21]1803dd567e9d87e.png[/img] = H[img=7x22]1803dd5686ffa22.png[/img] D: Fe[img=17x22]1803dd568e4cd48.png[/img] + e[img=11x21]1803dd5697018a2.png[/img] = Fe[img=17x22]1803dd569fcffe9.png[/img]
- 将下列反应设计成原电池,不必用惰性电极的是( )。 A: H[img=7x22]1803dd54c4a87b6.png[/img]+Cl[img=7x22]1803dd54ccdd1cc.png[/img]=2HCl B: 2Fe[img=17x22]1803dd54d68f53a.png[/img] + Cu = 2Fe[img=17x22]1803dd54dee3a81.png[/img] + Cu[img=11x21]1803dd54e89f78a.png[/img] C: Ag[img=11x21]1803dd54f0b68dd.png[/img] + Cl[img=11x21]1803dd54f9957a3.png[/img] = AgCl D: 2Hg[img=17x22]1803dd550251254.png[/img] + Sn[img=17x22]1803dd550aaeb4f.png[/img] = Hg[img=17x27]1803dd5511f2954.png[/img] + Sn[img=17x22]1803dd551b2e2af.png[/img]
- 铜元素的标准电势图为:Cu[img=17x22]1803dd574ba4258.png[/img]0.153VCu[img=11x21]1803dd5754d4754.png[/img]0.521VCu则:Cu[img=17x22]1803dd575cda43f.png[/img]与 Cu[img=11x21]1803dd576510074.png[/img]在水溶液中的稳定性大小为( )。 A: Cu[img=17x22]1803dd576f1dbe2.png[/img]大,Cu[img=11x21]1803dd57770ecdb.png[/img]小 B: Cu[img=17x22]1803dd576f1dbe2.png[/img]小,Cu[img=11x21]1803dd57770ecdb.png[/img]大 C: 两者稳定性相同 D: 无法比较
- 向[Cu(NH[img=7x22]1803dd51c2de467.png[/img])[img=7x22]1803dd51cb8fffa.png[/img]][img=17x22]1803dd51d4fec17.png[/img]水溶液中通人氨气,则( )。 A: [img=18x23]1803dd51dd87c39.jpg[/img]{[Cu(NH[img=7x22]1803dd51e66bab7.png[/img])[img=7x22]1803dd51efcfab1.png[/img]][img=17x22]1803dd51f7f4cb2.png[/img]}增大 B: [img=18x23]1803dd51dd87c39.jpg[/img]{[Cu(NH[img=7x22]1803dd51e66bab7.png[/img])[img=7x22]1803dd51efcfab1.png[/img]][img=17x22]1803dd51f7f4cb2.png[/img]}减小 C: c(Cu[img=17x22]1803dd522554f82.png[/img])增大 D: c(Cu[img=17x22]1803dd522554f82.png[/img])减小
- 向[Cu(NH[img=7x22]1803dd536bcc828.png[/img])[img=7x22]1803dd537482749.png[/img]][img=17x22]1803dd537d6d02e.png[/img]水溶液中通人氨气,则( )。 A: K[img=11x29]1803dd53859b819.png[/img]{[Cu(NH[img=7x22]1803dd538e3217f.png[/img])[img=7x22]1803dd5396dafff.png[/img]][img=17x22]1803dd539f14ef6.png[/img]}增大 B: K[img=11x29]1803dd53859b819.png[/img]{[Cu(NH[img=7x22]1803dd538e3217f.png[/img])[img=7x22]1803dd5396dafff.png[/img]][img=17x22]1803dd539f14ef6.png[/img]}减小 C: c(Cu[img=17x22]1803dd53ca43752.png[/img])增大 D: c(Cu[img=17x22]1803dd53ca43752.png[/img])减小