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下列各组离子在常温下一定能大量共存的是( )
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常温下下列各组离子在指定溶液中一定能大量共存的是
0.1 mol•L-1NaHCO3溶液: K+、Fe3+、Cl-、NO3-
使甲基橙变红色的溶液:NH4+、Cu2+、ClO-、Na+
常温下由水电离出的c(H+)=1×10-13mol·L-1的溶液中:Mg2+、Na+、SO32-、NO3-
常温下在c(H+)=1×10-13mol·L-1的溶液中: Na+、K+、SO42-、CO32-
常温下下列各组离子在指定溶液中一定能大量共存的是
0.1 mol·L-1 FeCl3溶液:K.+、NH4+、I.-、SCN-
0.1 mol·L-1 Na2CO3溶液:K.+、Ba2+、NO3-、Cl-
0.1 mol·L-1 NaOH溶液:K.+、Na+、SO42-、CO32-
c(H+)/c(OH-)=1×1014的溶液:Ca2+、Na+、ClO-、NO3-
在下列溶液中各组离子一定能够大量共存的是
硫__溶液: Na
+
、Fe
3+
、Cl
-
、SO
4
2-
常温下pH=1的溶液:Fe
2+
、Mg
2+
、NO
3
ˉ、SO
4
2-
无色透明溶液:Cu
2+
、Ag
+
、NO
3
ˉ、Br
-
氯化铵溶液:K
+
、H
+
、SO
4
2-
、NO
3
ˉ
常温下下列各组离子在溶液中一定能大量共存的是
Na
+
、Al
3+
、OH
-
Ba
2+
、NO
3
-
、SO
4
2
-
K
+
、Na
+
、NO
3
-
K
+
、NH
4
+
、OH
-
常温下下列各组离子在指定溶液中一定能大量共存的是
在pH=1的溶液中:K.
+
、Na
+
、SO
4
2–
、HCO
在0.1 mol·L
-1
Na
2
CO
3
溶液中:Al
3
+
、K.
+
、NO、SO
4
2–
在0.1 mol·L
-1
FeCl
3
溶液中:K.
+
、NH、I.
-
、SCN
-
在pH=12的溶液中:K.
+
、Na
+
、ClO
-
、NO
下列各组离子在溶液中一定能大量共存而且呈无色的是
Na+、Fe3+、SO42-、NO3-
OH-、Ba2+、HCO3-、Cl-
H.+、Mg2+、Cl-、NO3-
K.+、H.+、ClO-、S.2-
常温下下列各组离子一定能大量共存的是
Na
+
、K.
+
、Cl
-
、CH
3
COO
-
Ba
2+
、K.
+
、SO
4
2-
、CO
3
2-
Al
3+
、K.
+
、CO
3
2-
、Cl
-
Na
+
、Fe
3+
、Cl
-
、SO
4
2-
在下列溶液中各组离子一定能够大量共存的是
常温下水电离出的c(OH-)=10-13的溶液中:Na+、ClO-、F.-、K.+
能使广泛pH试纸显蓝色的溶液:K.+、Ba2+、Cl-、Br-
含有大量Al3+的溶液:Na+、Cl-、S2-、OH-
能使淀粉碘化钾试纸显蓝色的溶液:K.+、SO
、S2-、SO
常温下下列各组离子在指定溶液中一定能大量共存的是
含有0.1 mol·L-1 Fe3+的溶液中:K.+、Mg2+、SCN-、SO42-
c(H+)/c(OH-)= 1×1014的溶液: Ca2+、Na+、ClO-、NO3-
能使酚酞变红的溶液:Na+、Ba2+、NO3-、Cl-
水电离产生的c(H+) =10—12mol·L—1的溶液中:Na+、Fe2+、SO42—、NO3-
常温下下列各组离子在指定溶液中一定能大量共存的是
c(H
+
)=1.0 mol·L
-1
的溶液中:Na
+
、SO、S
2
-
、SO
常温下,c(H
+
)/c(OH
-
)=1×10
-10
的溶液中:Ca
2
+
、Mg
2
+
、HCO、I.
-
由水电离的c(H
+
)=1×10
-12
mol·L.
-1
的溶液中:Ba
2
+
、K.
+
、Cl
-
、NO
使甲基橙变红色的溶液中:Fe
2
+
、K.
+
、NO、SO
下列各组离子在常温下一定能大量共存的是
无色透明的溶液中:Na
+
、Ba
2+
、AlO
2
-
、OH
-
加入铝粉能放出H
2
的溶液中:H
+
、K
+
、SO
4
2-
、 Cl
-
含有大量Fe
3+
的溶液中:NH
4
+
、Ca
2+
、SCN
-
、Br
-
pH=0的溶液中:Fe
2+
、Mg
2+
、NO
3
-
、SO
4
2-
下列各组离子一定能大量共存的是
常温下PH=1的溶液中:
含有大量
的溶液:
加入铝粉能产生氢气的溶液:
由水电离出的
溶液:
常温下下列各组分子或离子在指定的分散系中一定能大量共存的是
pH=1的溶液中:Na
+
、K
+
、MnO
4
-
、Fe
2+
空气中:C
2
H
2
、CO
2
、SO
2
、NO
使酚酞变红色的溶液:Na
+
、K
+
、SO
4
2-
、CO
3
2-
与铝反应产生大量氢气的溶液:Na
+
、K
+
、NO
3
-
、ClO
-
常温下下列各组离子在指定溶液中一定能大量共存的是
1.0mol·L-1的KNO3溶液:H+、Fe2+、Cl-、
甲基橙呈红色的溶液:
pH=12的溶液:K+、Na+、CH3COO-、Br-
与铝反应产生大量氢气的溶液:
常温下下列各组离子在指定溶液中一定能大量共存的是
甲基橙呈红色的溶液中:
常温下的溶液:
O.1 mol/L AgNO
3
溶液:
加入苯酚显紫色的溶液:
常温下下列各组离子在指定溶液中一定能大量共存的是
0.1mol·L
-1
NaHCO
3
溶液:K.
+
、Fe
3+
、Cl
-
、NO
3
—
使甲基橙变红色的溶液:NH
4
+
、Cu
2+
、ClO
-
、Na
+
常温下由水电离出的c(H
+
)=1×10
-13
mol·L
-1
的溶液中:Mg
2
+
、Na
+
、SO
3
2
-
、NO
3
-
常温下在c(H
+
)=1×10
-13
mol·L
-1
的溶液中:Na
+
、K
+
、SO
4
2-
、CO
3
2-
常温下下列各组离子在指定溶液中一定能大量共存的是
1.0 mol·L-1的KNO3溶液:H.+、Fe2+、Cl-、SO
甲基橙呈红色的溶液:NH
、Ba2+、AlO
、Cl-
与铝反应产生大量氢气的溶液:Na+、K.+、CO
、Cl-
pH=12的溶液:K.+、Na+、CH3COO-、Br-
常温下下列各组离子在指定溶液中一定能大量共存的是
含大量Al
3+
溶液无色溶液中: AlO
2
-
、OH
—
、MnO
4
—
、SO
4
2—
含有大量HCO
3
-
的溶液中:Na
+
、Ca
2+
、NO
3
—
、Cl
—
含大量AlO
2
-
溶液:H
+
、K
+
、SO
4
2—
、Cl
—
使石蕊变红色的溶液:SO
3
2—
、Cl
—
、NO
3
—
、K
+
常温下下列各组离子在制定溶液中一定能大量共存的是
1.0mol▪L-1的KNO3溶液:H
+
、Fe
2+
、Cl
-
、SO4
2-
甲基橙呈红色的溶液:NH4
+
、Ba
2+
、AlO
2-
、Cl
-
pH=12的溶液:K
+
、Na
+
、CH
3
COO
-
、Br
-
与铝反应产生大量氢气的溶液:Na
+
、K
+
、CO
3
2-
、NO
3
-
常温下下列各组离子在指定溶液中一定能大量共存的是
甲基橙呈红色的溶液中:
常温下的溶液:
O.1 mol/L AgNO3溶液:
加入苯酚显紫色的溶液:
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Whydoweread?Forinformationorskills?Howdowefeelwhenweread?Excitedorsad?Wereadaloudandthinkaboutthem.Isthatenough?Ithinkreadingismorethanpronouncingorthinkingaboutwords. RecentlyTheReaderbecomesverypopularinChina.It'sanationalreadingprogram.DongQingworksasbothahostess主持人andamaker.TheReaderhopestotelluswhattheworldisandittakesustoseethebeautifulworldbyreading.TheshowhasinvitedsomefamousguestswhohaverichexperiencesandmovingstorieslikeNiPingWangYuanfromTFBOYSandYaoChen. Readingtouchespeople'sheartsistheslogan口号ofTheReader.Whatitwantstopresentisn'treadingskillsbutrealfeelingsandtheytouchtheaudience观众most.TheReaderhasbecomeaturningpointinmycareer生涯inhostingandtheprogramhasbroughtmequitealargechallengesaidDong. TheReaderisimportanttotheaudienceandChineseculture.Italsotellsusifwecareforwhatwearereadingwe'llknowwhatreadingreallyisandwewillbecomebetterreaders. 1.WhoisthehostessoftheReader? A.NiPing. B.DongQing. C.WangYuan. D.YaoChen. 2.WhatisTheReader? A.Itisaradioprogam. B.Itisamagazine. C.Itisabook. D.Itisanationalreadingprogam. 3.Whatisthepurposeoftheprogam? A.Totellmovingstoriesandrichexperiences. B.Tomeetsomefamouspeople. C.Totelluswhattheworldisandtakeustoseethebeautifulworldbyreading. D.Totellussomereadingskillsandmovingstories. 4.touchestheaudiencemost. A.Realfeelings B.Thestoriesoffamouspeople C.Theimportancewegetfrombooks D.Beautifulsentences 5.WhichisNOTtrueaccordingtothepassage? A.DongQingthinksreadingispronouncingandthinkingaboutthewords. B.DongQingisnotonlyahostessbutalsoamaker. C.TheprogramhasbroughtDongQingaveryhugechallenge. D.TheReaderisaturningpointinDongQing'scareerinhosting.
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