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恒温恒容条件下，能说明反应H2 （g）+I2 （g）＝2HI（g） 一定处于化学平衡状态的是（ ）
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高三上学期化学《》真题及答案
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将1molI2g和2molH2置于2L密闭容器中在一定温度下发生反应I2g+H2g⇌2HIg△H.＜
将1molH2g和2molI2g置于某2L密闭容器中在一定温度下发生反应H2g+I2g2HIg△H＜
恒温恒容条件下，加入适当催化剂
恒温条件下，缩小反应容器体积
恒容条件下升高温度
恒温条件下，扩大反应容器体积
一定温度下在带活塞的密闭容器中反应H2g+I2g2HIg正反应为放热反应达到平衡后下列说法不正确的是
恒容时，升高温度，平衡向逆反应方向移动，正反应速率减小
恒温时，减小容积平衡不移动，但气体颜色加深
恒容时，通入H2，则I2的质量分数减小
恒压时，通入HI气体，刚开始时正反应速率会减小
将1molI2g和2molH2置于2L密闭容器中在一定温度下发生反应I2g+H2g2HIg△H＜0并
将1molI2g和2molH2g置于某2L密闭容器中在一定温度下发生反应I2g+H2g2HIg;ΔH
将2molI2g和1molH2置于某2L.密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH
将1molH2g和2molI2g置于某2L密闭容器中在一定温度下发生反应H2g+I2g2HIg△H.
恒温恒容条件下，加入适当催化剂
恒温条件下，缩小反应容器体积
恒容条件下升高温度
恒温条件下，扩大反应容器体积
将1.0molI2g和2.4mclH2置于某2L密闭容器中在某一温度下发生反应H2g+I2g⇌2HI
将1molH2g和2molI2g置于某2L.密闭容器中在一定温度下发生反应H2g＋I2g2HIgΔH
恒温恒容条件下，加入适当催化剂
恒温条件下，缩小反应容器体积
恒容条件下升高温度
恒温条件下，扩大反应容器体积
将2molI2g和1molH2置于某2L.密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH.
在一定条件下对于密闭容器中进行的可逆反应2HIgH2g+I2g下列说法中能说明这一反应已达到化学平衡
正、逆反应速率都等于零
HI、H2、I2的浓度相等
HI、H2、I2在容器中共存
HI、H2、I2的浓度均不再变化
将1molI2g和2molH2置于某2L.密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH.
将1molI2g和2molH2置于5L.密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH.
将1molH2g和2molI2g置于某2L密闭容器中在一定温度下发生反应H2g+I2g2HIg△H
恒温恒容条件下，加入适当催化剂
恒温条件下，缩小反应容器体积
恒温条件下，扩大反应容器体积
恒容条件下升高温度
将2molI2g和1molH2置于某2L.的密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH
将1molI2g和2molH2置于5L.密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH.
将1molI2g和2molH2g置于2L密闭容器中在一定温度下发生反应I2g+H2g2HIg△H.
恒容条件下升高温度
恒温恒容条件下加入适当的催化剂
恒温条件下扩大反应容器的体积
增大反应物中H
2
的浓度
将1molH2g和2molI2g置于某2L.密闭容器中在一定温度下发生反应H2g＋I2g2HIgΔH
恒温恒容条件下，加入适当催化剂
恒温条件下，缩小反应容器体积
恒容条件下，升高温度
恒温条件下，扩大反应容器体积
将2molI2g和1molH2置于某2L.的密闭容器中在一定温度下发生反应I2g＋H2g2HIgΔH
在一定温度下发生反应I2g＋H2g2HIg;△H＜0并达平衡HI的体积分数V.HI随时间变化如图曲线
①⑤，③
②⑤，④
③⑤，②
③⑤，④
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某药物中间体X其结构如图所示．下列说法正确的是
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﹣﹣﹣CanIreallygetanapple6plusasarewardifIwinthecompetition? ﹣﹣﹣Absolutely!________. A.Sowillyou B.Italldepends C.Imeanit D.That'sallright
为了探究AgNO3的氧化性和热稳定性某化学兴趣小组设计了如下实验． Ⅰ．AgNO3的氧化性 将光亮的铁丝伸入AgNO3溶液中一段时间后将铁丝取出．为检验溶液中Fe的氧化产物将溶液中的Ag+除尽后进行了如下实验．可选用试剂①KSCN溶液②NaOH溶液③酸性KMnO4溶液④K3[FeCN6]溶液． 1请完成下表 【实验结论】Fe的氧化产物为Fe2+和Fe3+ Ⅱ．AgNO3的热稳定性 用如图所示的实验装置A加热固体产生红棕色气体在装置D中收集到无色气体．当反应结束以后试管中残留固体为黑色． 2装置B的作用是． 3经小组讨论并验证该无色气体为O2其操作方法是． 4[查阅资料】①Ag2O和粉末的Ag均为黑色②Ag2O可溶于氨水． 【提出假设】试管中残留的黑色固体可能是①Ag②Ag2O③Ag和Ag2O． 【实验验证】该小组为验证上述设想分别取少量黑色固体进行了如下实验 【实验评价】根据上述实验不能确定固体产物成分的实验是填实验编号． 【实验结论】根据上述实验结果得出AgNO3固体受热分解的化学方程式为． 【实验拓展】另取2.0gAgNO3样品充分受热分解共收集到标准状况下气体的体积为336mL则样品中AgNO3的百分含量为．
钴及其化合物广泛应用于磁性材料电池材料及超硬材料等领域． 1CoxNi1﹣xFe2O4其中CoNi均为+2可用作H2O2分解的催化剂具有较高的活性． ①该催化剂中铁元素的化合价为． ②图1表示两种不同方法制得的催化剂CoxNi1﹣xFe2O4在10℃时催化分解6%的H2O2溶液的相对初始速率随x变化曲线．由图中信息可知法制取得到的催化剂活性更高Co2+Ni2+两种离子中催化效果更好的是． 2草酸钴是制备钴的氧化物的重要原料．下图2为二水合草酸钴CoC2O4•2H2O在空气中受热的质量变化曲线曲线中300℃及以上所得固体均为钴氧化物． ①通过计算确定C点剩余固体的化学成分为填化学式．试写出B点对应的物质与O2在225℃～300℃发生反应的化学方程式． ②取一定质量的二水合草酸钴分解后的钴氧化物其中Co的化合价为+2+3用480mL5mol/L盐酸恰好完全溶解固体得到CoCl2溶液和4.48L标准状况黄绿色气体．试确定该钴氧化物中CoO的物质的量之比．
8分2015WasaWarmWildYear.What'sNext?2015sawthingsheatupandgetoutofhandandnotjustinpolitics.ArecordwarmDecemberraisedaveragetemperaturesenoughtomake2015thesecondhottestyearonrecordinthecontiguousUnitedStatesaccordingtotheNationalOceanicandAtmosphericAdministration'sNationalClimateMonitoringAnnualReportwhichwasreleasedThursday.TheUnitedNationshadpreviouslyreportedthat2015wasshapinguptobethewarmestyearonrecordforthewholeplanet.LastyearwasalsothethirdwettestonrecordintheU.S.andsawtenweather﹣orclimate﹣relateddisastersthateachcausedatleast﹩1billionindamageintheU.S.andkilledatotalof155people.Theseincludeadroughttwofloodsfiveseverestormsawildfireandawinterstorm.TheaverageU.S.temperaturewas54.4°F2.4°Fabovethe20thcenturyaverageandsecondonlyto2012'srecordwarmth.Thiswasalsothe19thconsecutiveyearwithaveragetemperaturesabovetheaverageforthecentury.Everystatereportedabove﹣averageannualtemperatures.ThewarmingwasparticularlypronouncedacrossmostoftheeasternhalfofthecountryinDecemberwhenmanyplacessawtemperatures30degreesabovenormalandmanyrecordswereset.ThismirroredchangesseenintheArcticthatmonthwhentemperaturesspikedto50degreesabovenormal.PartofthiswarmingwasdrivenbyastrongElNiñoorperiodicwarminginthePacificOceanbutsomeofitcanalsobeattributedtoglobalwarmingsaysmeteorologistEricHolthauswhowasnotinvolvedwiththefederalreport.TheanalysiscomeslessthanamonthaftertheU.S.and194othercountriessignedanagreementinParistomoreaggressivelycountertheeffectsofclimatechange.'EvenifalltheinitialtargetsinParisaremetwe'llonlybepartofthewaytherewhenitcomestoreducingcarbonfromtheatmosphere'saidPresidentBarackObamaatthetime.Stilltheagreementrepresented'aturningpoint'bysettingup'thearchitecture'fordoingsohesaid.NOAA'sclimatemonitoringcenterdoesn'tissuepredictionsforfutureweatherbuttheagency'sClimatePredictionCenterdoes.Thatteam'sforecastforthenextthreemonthscallsforwarmer﹣than﹣averagetemperaturesinmuchofthecountryalthoughpartsofTexasandtheSoutheastmaybealittlecoolerthanusual.AsLancasterUniversityProfessorGailWhitemantoldtheWeatherChannel'climatechangemeansextremeweatheristhenewnormal.'1AccordingtothepassagethewarmestyearintheU.S.isA.2014B.2015C.notmentionedD.20122Accordingtothepassagewhichstatementisright?A.2015wasthethirdwettestyearonrecordinthewholeplanet.B.Tenweather﹣orclimate﹣relateddisastersintheU.S.includeadroughttwofloodsfourseverestormstwowildfiresandawinterstorm.C.The20thcenturyaveragetemperatureintheU.S.was52°F.D.ThewarmingwaspronouncedacrossmostofthewesternhalfofthecountryinDecember.3TheagreementtheUS.and194countriessignedaimedtoA.reducecarbonfromtheatmosphereB.countereffectsofclimatechange.C.setupthearchitectureD.findartificialwaystocooldowntheextremeweather4WhatdoesProfessorGailWhitemanmeaninthefuture?A.Extremeweatherwillbecommoninthefuture.B.Climatechangewillbenormal.C.Extremeweatherwillbenormalifwedon'ttakemeasures.D.Climatechangeleadtoextremeweather.
Lifeislikeawindingpathsurroundedbyflowersbutterfliesanddeliciousfruits______manyofusspendmuchtimelookingforhappinessaroundthenextcorner A.therefore B.though C.moreover D.otherwise
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