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

2022-06-29

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]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

答案：

D

举一反三

内容

0
根据反应Sn[img=17x22]1803dd5523845f9.png[/img] + Zn=Sn[img=17x22]1803dd552cbe936.png[/img] + Zn[img=17x22]1803dd5536450b7.png[/img] 构成原电池，其电池符号为( )。 A: （-）Zn︱Zn[img=17x22]1803dd553f645a0.png[/img](c[img=7x22]1803dd5547a1bc4.png[/img])‖Sn[img=17x22]1803dd554ef2d49.png[/img] (c [img=7x22]1803dd5556ef387.png[/img])︱Sn[img=17x22]1803dd555ed5977.png[/img]( c [img=7x22]1803dd5567a5404.png[/img]) (+) B: （-）Zn︱Zn[img=17x22]1803dd553f645a0.png[/img](c[img=7x22]1803dd5547a1bc4.png[/img])‖Sn[img=17x22]1803dd554ef2d49.png[/img] (c [img=7x22]1803dd5556ef387.png[/img])︱Sn[img=17x22]1803dd555ed5977.png[/img]( c [img=7x22]1803dd5567a5404.png[/img]) ︱Pt(+) C: （-）(Pt)Zn︱Zn[img=17x22]1803dd553f645a0.png[/img](c[img=7x22]1803dd5547a1bc4.png[/img])‖Sn[img=17x22]1803dd554ef2d49.png[/img] (c [img=7x22]1803dd5556ef387.png[/img]),Sn[img=17x22]1803dd555ed5977.png[/img]( c [img=7x22]1803dd5567a5404.png[/img]) ︱Pt (+) D: （-）Zn︱Zn[img=17x22]1803dd553f645a0.png[/img](c[img=7x22]1803dd5547a1bc4.png[/img])‖Sn[img=17x22]1803dd554ef2d49.png[/img] (c [img=7x22]1803dd5556ef387.png[/img]),Sn[img=17x22]1803dd555ed5977.png[/img]( c [img=7x22]1803dd5567a5404.png[/img]) ︱Pt (+)
1
c(NH[img=7x22]1803dd46bffa4bb.png[/img]Cl)=0.10mol·L[img=17x22]1803dd46c8797dc.png[/img]的NH[img=7x22]1803dd46d151711.png[/img]Cl水溶液的pH约为( )。 [img=27x27]1803dd46dac2dfc.png[/img](NH[img=7x22]1803dd46e2dc9d7.png[/img])=1.8×10[img=17x22]1803dd46ebd8fe2.png[/img] A: 4.15 B: 4.63 C: 5.12 D: 7.0
2
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]
3
3. 三阶行列式D=[img=110x71]18039d1f1b55d53.png[/img]= A: 5 B: 17 C: 22 D: 7
4
X，Y相互独立，X服从参数为2的泊松分布，Y服从[img=54x25]1803b4181e39f0c.png[/img]，则[img=84x25]1803b4182602fd0.png[/img]与[img=86x25]1803b4182e0ab99.png[/img]分别为 A: -1，-7 B: 1, -7 C: 1，17 D: -1, 17