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2020年安徽特岗教师招聘《理科综合—化学》

2019-03-12 13:59:08| 安徽中公教育网

kaodian·lizigongcun

BG真人版panduanrongyezhonglizinengfoudalianggongcundeguilv:

BG真人版duozhonglizinengfoudalianggongcunyutongyirongyezhong,guinaqilaijiushiyijuhua: yiseerxingsifanying。

(1)yise。jirongyeyanse。

ruotizhongxiandingtiaojianweiwuserongye,zezhuyife3+、fe2+、cr3+、cr2o72-、cro42-、mno4-、cu2+dengyouselizibunengcunzai。

(2)erxing。jirongyedesuanxinghejianxing。

zaiqiangsuanxingrongyezhong,oh-jiruosuangenyinlizi(ruco32-、so32-、s2-、ch3coo-deng)junbunengdaliangcunzai;

BG真人版zaiqiangjianxingrongyezhong,h+jiruojianyanglizijunbunengdaliangcunzai;

suanshiruosuangenlizizaiqiangsuanxinghuoqiangjianxingrongyezhongjunbunengdaliangcunzai。

(3)sifanying。

BG真人版zhilizijiantongchangnengfashengdesizhongleixingdefanying,nengxianghufanyingdelizixianranbunengdalianggongcun。

BG真人版a.fufenjiefanying,ruba2+yuso42-、nh4+yuoh-deng;

b.yanghuahaiyuanfanying,rufe3+yui-,no3-(+h+)yuhaiyuanxinglizife2+deng;

c.shuangshuijiefanying,rual3+yuhco3-、al3+yualo2-、alo2-yuhco3-dengbunengdalianggongcun;

d.luohefanying,rufe3+yuscn-deng。

kaodian·lizifangchengshishuxie

1.shuxielizifangchengshidezhuyidian:

(1)weirongwuchulifangshiyousanzhongqingkuang

BG真人版①chuxianzaishengchengwuzhongxiehuaxueshi;

②zuofanyingwuchuyurongyezhuangtaixielizifuhao;

③zuofanyingwuchuyuzhuoyehuogutaishixiehuaxueshi。

BG真人版(2)nonghcl、nonghno3zailizifangchengshizhongxielizifuhao,nongh2so4buxielizifuhao。

BG真人版(3)hco3-、hs-、hso3-dengruosuanyandesuanshisuangenlizibunengchaikaixie,qiangsuanyandesuanshisuangenlizichaixiechenglizixingshi。

(4)zhuyiteshufanyingzhong,gefanyingwujiarudeshunxuyijijiarudeliangdeduoshao。

li:

alcl3rongyezhongdijianaohrongye: al3++3oh-=al(oh)3↓

BG真人版naohrongyezhongdijiaalcl3rongye: al3++4oh-=alo2-+2h2o

ca(hco3)2rongyezhongjiarushaoliangdenaohrongye:

BG真人版ca2++oh-+hco3-=caco3↓+h2o

ca(hco3)2rongyezhongjiaruguoliangdenaohrongye:

BG真人版ca2++2oh-+2hco3-=caco3↓+2h2o+co32-

2.lizifangchengshizhengwupanduan:

(1)guanchawuzhidecunzaixingshihechanwushifouzhengque;

(2)看"===="、""、"↑"、"↓"(盐类水解产生的沉淀,不写"↓",气体不写"↑",双水解都要写)用的是否恰当;

BG真人版(3)shifouzunshouzhiliangshouhenghedianheshouheng;

(4)shifoufuhetishetiaojianjiyaoqiu。ru"guoliang""shaoliang""dengwuzhideliang""shiliang""renyiliang"yiji"dijiashunxu"dengduifanyingdeyingxiang;

BG真人版(5)kanshifouloudiaolemouxiefanying。

BG真人版kaodian·afujiadeluochangshu

1.afujiadeluochangshudeyunyongshikaochahemingtideredian。ru: yizhiwuzhidezhiliang,wuzhideliang,wuzhidetiji,qiulizideshumuhuobijiaoqilizideshumudaxiao;yizhirongyedetijihenongdu,qiurongyezhongrongzhidelizideshumu,huobijiaoqilizideshumudaxiao;yizhilizideshumu,qiuwuzhidezhiliang,wuzhideliang,wuzhidetiji,rongyezhongrongzhidelizidenongduhuorongyedenongdu;wuzhizaifashengyanghuahaiyuanfanyingshidianzizhuanyideshumu。

2.jietishiyaotebiezhuyisuojidetiaojian,qiushenmelizishu,shentiyaozixi,zheizhongtixingjiaozhaonianniankao,danshifenzheyiranjiaoduo,zhuyaoshiwuzaishentibugouzixi。shentishiyingzhuyiruxiaxijie:

(1)wuzhidezhuangtai: shuizaibiaozhunzhuangkuangxiashiweiyetaihuogutai;so3zaibiaozhunzhuangkuangxiaweigutai,changwenchangyaxiaweiyetai;zaibiaozhunzhuangkuangxia,tanyuanzishudayu4erxiaoyu16detingweiyetai,dayudengyu16detingweigutai。

(2)mouxiewuzhidefenzizhongdeyuanzigeshu,ruduoxingqiti、chouyang(o3)、bailin(p4)deng。

BG真人版(3)yixiewuzhijiegouzhonghuaxuejiandeshumu,rusio2(si-osijian)、si、p4(6gep-pjian)deng。

BG真人版(4)tebiewuzhidemoerzhiliang,rud2o,t2o,18o2deng。

(5)jiaofuzadeyanghuahaiyuanfanyingzhong,qiusuanzhuanyidianzishu,runa2o2+h2o、dianjiecu(no3)2rongyedeng。

(6)zaiyongdaoqitimoertiji22.4l/molshi,bixuzhuyisuojiwuzhishifouweiqiti,ruguoshiqitikanshifouchuyubiaokuang。

(7)mouxielizihuoyuanzituanshuirongyezhongnengfashengshuijiefanying,lizishumuyaogaibian。

BG真人版kaodian·wuzhidefenli、tichunyujianyan

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