广西河池市2021年中考化学试题

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2021ὃᓄ⚪▅ᔁஹᓫ⌱⚪ᐳ20⚪ᐳ40ᑖᑖ1.2ᑖ2021•ᑡᓄ⌕ᱥᳮᓄḄ#A.ᐝᔠᵨB.%ᱥῖ'C.(⊟᧼+D.-./0ூᫀ௃Cூὃ2௃ᱥᳮᓄஹᓄ4ᓄḄᱯ26ᐸᑨ9ூ:᪆௃ூ:௃Aஹᐝᔠᵨᡂ=ᨵ?ᱥ@ABCDEᔠ⚪GHBஹ%ᱥῖ'ᡂ=IᱥJCDEᔠ⚪GHCஹ(⊟᧼+KLMKLBCNᨵᡂIᱥJCEᔠ⚪GHDஹ-./0Oᡂ=PAᓄQ@KCDEᔠ⚪G஺ᦑᫀMTCoூᑖ᪆௃᪷WᙠᓄᨵNᨵᡂᐸYᱥJᩭᑨ[CᡂᐸYᱥJḄ#ᓄ4ᓄCNᨵᡂᐸYᱥJḄ#ᱥᳮᓄ஺2.2ᑖ2013•]^ᙠ_BḄᡂᑖC`aᑖᦪcᓰ21%Ḅ#A.fBB.PAᓄQC.ABD.gᨵB`ூᫀ௃Cூὃ2௃_BḄhᡂூ:᪆௃ூ:௃:T_BᔜᡂᑖḄ`aᑖᦪ#TfBᜧcᓰ78%ஹABᜧcᓰ21%ஹgᨵB`ᜧcᓰ0.94%ஹPAᓄQᜧcᓰ0.03%ஹKLB@ᐸoB`@ᩖJᜧcᓰ0.03%.ᵫrstCuvCAஹBஹD┯x.ᦑ⌱C.ூᑖ᪆௃᪷W_BᔜᡂᑖḄ`aᑖᦪᑖ᪆ᑨ[C_BᔜᡂᑖḄ`aᑖᦪ#TfBᜧcᓰ78%ஹABᜧcᓰ21%ஹgᨵB`ᜧcᓰ0.94%ஹPAᓄQᜧcᓰ0.03%ஹKLB@ᐸoB`@ᩖJᜧcᓰ0.03%.3.2ᑖ2021•2021z3ᨴᡃ}ᓅᙢ⍗=10zᩭᨬḄᜩBC_B⌼ᡂ=஺ᨵḄ⌕ᱥ#A.PAᓄB.AᓄQ

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5A.ỚDxyB.ỚD⏀{C.|}⏚~DxyD.|═⏚~Dூᫀ௃Cூὃ௃GHḄlᡂ$ᱯூ(᪆௃ூ(௃A.Ớ;GxyᡂỚḄxyGHᦑ:=ᔠ⚪@AB.Ớ;G⏀{ᡂỚ⏀ᦑ:=ᔠ⚪@AC.|┶⏚~:;GxyPὅoᔠsᡂHᦑ=ᔠ⚪@AD.|┶⏚~᧕Goᔠsᡂ|═⏚~GHᦑ:=ᔠ⚪@ᦑᫀVWC»ூᑖ᪆௃᪷ZGHḄᱯᑖ᪆஺12.2ᑖa`2021•a᝞VnḄ᪀@ᐸᓄKឋḄ7l0`aজঝঞটA.জDঝB.জDঞC.ঝDঞD.ঞDটூᫀ௃Bூὃ௃᪀@᪀@ூ(᪆௃ூ(௃ᨬ᜜ᵯᦪ£ᓄKឋ஺ᨬ᜜88ᵯ0¤¥"᪀஺¦§7¨0ᨬ᜜Ḅ28ᵯ¨0¤¥"᪀஺জঞ©0¤¥"᪀஺ᦑᫀVWB஺ூᑖ᪆௃᪷Zᐗ«ḄᓄKឋ¬ḄḄᨬ᜜ᵯᦪ®ᐵ°±²³ᑗᨬ᜜ᵯᦪ£Ḅᐗ«ᓄKឋᑖ᪆ᑨ¶஺13.2ᑖa`2021•aiᑡᵨ·¸⌕ᵫᔠᡂᩞᧇᑴᡂḄ0`aA.½¾¿B.ÀÁÂC.:┤ÄộD.⇷Çூᫀ௃Aூὃ௃ᔠᡂᩞᧇḄÈᵨ$ᐸ¤ÉDÊ᛻ḄÌÍூ(᪆௃ூ(௃AW½¾¿0ᵫ½¾ᑴᡂ½¾0ᔠᡂÎÏḄ7n஺A=ᔠ⚪@஺

6BWÀÁ0ᜩᯠÎÏ஺B┯஺CW:┤Ä0ᔠÕ0ÕÖᩞᧇ஺C┯஺DW⇷0ᜩᯠÎÏ஺D┯஺ᦑᫀVWAoூᑖ᪆௃᪷ZÚᨵḄᩞᧇḄÜÝᑖ᪆(஺14.`2ᑖa`2021bc•ᓅ╋gaåæçḄæᱥᡂᑖ¸⌕è┛ஹ~S஺êëḄ“┛ஹ~”ᢣḄ0`aA.B.ᑖC.ᐗ«D.ᓫூᫀ௃Cூὃ௃ᑖஹஹஹᐗ«ᱥðñḄᐵ°ூ(᪆௃ூ(௃ᱥᵫᐗ«lᡂ஺êëḄ“┛ஹ~”ᢣḄ0ᐗ«ò:0ᐗ«Ḅᐹôõᙠö஺ᦑᫀVWCoூᑖ᪆௃÷øcᱥᵫᐗ«lᡂ஺15.`2ᑖa`2021•aᑴúᒹஹüýᡠᵨÿ⏗
Ḅ⌕ᡂᑖᨵ⏚஺⏚ḄA.ᡭB.ᡭC.ឋD.ூ!ᫀ௃Aூὃ%௃ᱥ'Ḅ()(ூ*᪆௃ூ*!௃⏚ᡭ,ᦑ!ᫀ./Aoூᑖ᪆௃᪷2ᱥ'Ḅᑨ4஺16.2ᑖ2021•:;᝞=>ᓄ@ABḄCDEF=,ᐸHIJḄᳫL⊤JNOP஺QᑡSTUVḄA.WᡂᱥᨵXNᱥ'

7B.YABZ[\ᣚABC.^_AB`Nᱥ'ḄCabᦪd.1/1D.ABefᑖPNghᑖᦋj,OPNgᙳᦋjூ!ᫀ௃Bூὃ%௃ABglḄᑨmnCaD%opl=ḄBᵨூ*᪆௃ூ*!௃A2=ᑖ᪆rsABᱥᓄᔠᱥuᓫ'oo`Nᱥ',Wᡂᱥᓫ'••uᓄᔠᱥZQ`Nᱥ'஺A┯஺B/2=ᑖ᪆rsABᱥzNᓫ'uzNᓄᔠᱥ,Wᡂᱥ{zᓫ'u{zᓄᔠᱥ஺YABZ[\ᣚAB஺B|ᔠ⚪F஺C/2=ᑖ᪆rs^_AB`Nᱥ'ḄCabᦪd.1/2ᡈ2:1஺C┯஺D/ABefᑖPNgᦋj,OPNgᦋj஺D┯஺ᦑ!ᫀ./Boூᑖ᪆௃Aஹ᪷2ᱥ'Ḅ᪀ᡂᑖ᪆ᱥ'ḄNgnBஹ᪷2ABḄᱯ%ᑖ᪆ABḄglnCஹ᪷2CaḄjᓄᑖ᪆^_AB`Nᱥ'ḄCabᦪdnDஹ᪷2CaḄjᓄᑖ᪆ᑖPஹOPḄjᓄ஺17.2ᑖ2021•:;zmḄ
_ᐭᑮᨵMgSCUuCuSO4ᔠḄH,ᐙᑖABf,ᔣHᐭ⏚,ᨵ¡¢W஺QᑡSTUVḄA.HzmᨵMguCu,r¤ᨵZnB.HzmᨵZnuCu,r¤ᨵMgC.HzmᨵZnSO4uMgSCU,zmCuSChD.HzmᨵZnSChuMgSO4,r¤ᨵC11SO4ூ!ᫀ௃Cூὃ%௃§Z¨©ឋª«oᐸBᵨூ*᪆௃ூ*!௃Aஹᵫᑖ᪆rs,HzmᨵZnuCu,zm╅,⌱⚗A|ᔠ⚪FnBஹHzmᨵZnuCu,zm╅,⌱⚗B|ᔠ⚪FnCஹᔣHᐭ⏚,ᨵ¡¢W,S±Hzmᨵ,ᑣS±³⏚´¤µᐰAB,·ᨵᒕ¹,Hzmᨵ³⏚u³⏚╅,zm³⏚´,⌱⚗C|ᔠ⚪Fn

8DஹHzmᨵ³⏚u³⏚╅,zm³⏚´,⌱⚗D|ᔠ⚪F஺ᦑ!ᫀ./Coூᑖ᪆௃᪷2§Z¨©ឋª«,º)³⏚´ABWᡂ³⏚u´,º)³⏚╅AB,ᔣHᐭ⏚,ᨵ¡¢W,S±Hzmᨵ,³⏚´µᐰAB,H»zmᨵ´,¤³⏚╅HḄ╅\ᣚ¼ᩭ,2¾ᑖ᪆஺18.2ᑖ2021•:;Qᑡ¿ᳮUVḄ
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20⏚┛{⏚}ាᐰOUV'KC1KN03c⏚┛r7V'KC1ஹKNChCa`NOa2cKCKKNChHCIc{⏚}r7'KC1ஹKNChK2co3c!᣸◀2ᳮᵫ'{⏚┛hu⏚OUJᡂ>ᓄ┛ஹ~ᓄ{2efᨵE⁐GH2ᑣf.,-giᨵu⏚c())*)*+,-./Ḅᡂᑖ2345-Ḅ67+,89:;-2<=>ᓄ┛.,2ABᑮᨵE⁐GHIJ2'>ᓄ┛{⏚}OUJᡂ{⏚┛GH>ᓄ}2.,-iᨵ{⏚}2ᑣLMcOPQR᪷vw2ᙠᑖ᪆ᓄOU.,-./ḄᡂᑖV2◀ὃ⇋Jᡂᱥ᜜[◤ὃ⇋OUᱥ'ᔲr7஺ூᑖ᪆௃{⏚}u⏚OUJᡂ>ᓄ}ஹ~ᓄ{2⏚┛OUJᡂE⁐GH{⏚┛⏚}2>ᓄ┛OUJᡂ{⏚┛GH>ᓄ}஺{⏚┛u⏚OUJᡂ>ᓄ┛ஹ~ᓄ{஺ᙠᑖ᪆ᓄO.,-./ḄᡂᑖV2◀ὃ⇋Jᡂᱥ᜜2[◤ὃ⇋OUᱥ'ᔲr7஺▅ᔁ#ஹ$%⚪ᐳ1⚪ᐳ7ᑖᑖ30.`7ᑖ`2021•¤¥¦§¨©ª«¬ᔠ®᪵°-¬Ḅ/7ᑖᦪ2²³ᨵ200gµ⏚Ḅ45-¶·=ᐭ¹᪵°º»`ᩖ/gkµ⏚OU2ᐙᑖOU2¨¾¿ᑖᦪ᝞e⊤`OUḄᓄZn+H2sO4=ZnSO+HT)42()·ᦪ····«¬ᔠ®᪵°/7/g1010101045-ᱥ/Ä/7/g209.8X229.4239.4ÉÊ^`1`1ᑖ⊤-XḄᦪËc`2`1ᑖ¹«¬ᔠ®᪵°-¬Ḅ/7ᑖᦪc`3`5ᑖÍᡠᵨµ⏚Ḅ.//7ᑖᦪ`ᑏÑÒr2ÓÔÕMᑮ0.1%஺ூ^ᫀ௃`1219.6(2)65%

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yµ⏚ᐰOUVJᡂÚaḄ/7:10g+10g+1Og+200g-229.4g=0.6gÜᡠᵨµ⏚Ḅ.//7X஺Zn+H2sO4=HT-\-ZTLSO2982x0.6g98_x20.6gx=294g29.4gX100%=14.7%200g^ᡠᵨµ⏚Ḅ.//7ᑖᦪ14.7%„ூὃs௃./Ḅ/7ᑖᦪxÝᐵÑÒc᪷ᓄOUḄÑÒூy᪆௃ூy^௃`1
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y·=ᐭᔠ®10gាᐰOU2JᡂÚa`200g+10g
—209.8g=0.2gÜ«¬ᔠ®᪵°-¬Ḅ/7X஺Zn+H2sO4="2T+ZnS04652x0.2g65_xãx—6.5g100%=65%io஺ூᑖ᪆௃¬µ⏚OUJᡂµ⏚¬Úa2᪷OUḄᓄxᐸåæᦪçèÝᐵ☢ḄÑÒ஺y⚪V⌕ìíî⌕⚞জy⚪ñò⌕᦮cঝß⌕õcঞ¾ᦪ⌕øM஺ᢕúîᐵûজøMüᑏᓄcঝᓄ⌕ýþcঞøMÑÒÝÿᑖ
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