2022年广西河池市都安县某中学中考模拟化学试题（解析版）

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Ḅ;⏚uஹABᓄ;®஺ùᑴmLúèéḄABᓄ;z&ᨬû⌱öïð(“÷”ᡈ“T”)⌱öḄᳮᵫ¶oAூ¨ᫀ௃(1)0.2KMnO4=KMnO4+MnO2+O2tঝ.Ḅᩈᩩᙠaᜐᩈᩩ2ᑣ(2)"#$%&'⁐)*"ᮞ,&-.(3)জ.Bঝ.2ঞ.4Ḽ67Ḅ89:;⏚:=&>?@A>;⏚67BᡂDEFGHIᓄ;K=LMூO᪆௃ூR1TO௃AVWXYYZ[\VW]^ᨵ`aᑣ〉ᔠᵨe┶⏚gh[ᑖOᑴIEe═⏚gh[ᑖOBᡂlA⏚gஹHIᓄ?AIEᓄn67opqrs2KMnO4=K2MnO4+MnCh+O2t;IEḄw=xyEᜧᑣᵨEVWᦈIE}IE~b8ᐭᦑIEḄorsḄᩈᩩᙠaᜐᩈᩩᑣூR2TO௃HIᓄ@A,67Bᡂ⏚⏚ᕈ⏚ឋ@"#]ᑺ&'⁐஺HIᓄ@ADIᓄ┛67Bᡂ⏚┛@)*"ᮞ,&-.஺ᑣHIᓄ8ᐭFVWᑮ]^$%&'⁐)*"ᮞ,&-.ூR3TO௃ᵨ:;⏚67ᑴSO?E67¡rYA%Ḅ¢ᡂᦑ〉ᔠᵨBVW£67¤BVW?Ḅ¥¦ឋᜧ§H,ᑣ?@A>;⏚67BᡂDEᵨZnA:;⏚67ᑴHIᓄ;4Ḽ67Ḅ89;⏚:=&M67«¬BDEFGHIᓄ;ḄK=&M2¥¦ឋ§H,@A;⏚67BᡂDEᦑ〉ᔠᵨ2ᩭᑴHIᓄ;஺29.°ᐶ²¢³´╅A>¶⏚Ḅ67஺(1)╅A>¶⏚67Ḅᓄnopqro(2)¸ᵨṺºᡭ¼╅ᩩḄ½ḄX஺(3)ᡭ¼Ḅ╅ᩩᐭ>¶⏚¾¿}À¤Áᨵ“ᮞÃ⁐”¬BḄÅÆÁÇ஺ூÈÉR⚪௃ᮞÃ⁐@ËᨵÌÍᱥÏÐ

20ூÑ▅Óᧇ௃জ╅A[,67Bᡂ¾ÕÖDEsঝ×ᓄ╅ᙠÖឋ$%A,67Bᡂ$§,ḄÖq×ᓄ╅ூMg(OH)ClூÈÉᎷÙ௃ᵬÛnÜrᮞÃ⁐ËMgCL,ÝÜrÞßXàÛnÜrᮞÃ⁐@ËᨵsáâlsMgsáâII:Mg(OH)2.áâHI:Mg(OH)Clூ³´௃àÛnᮞÃ⁐ãäஹåæᑖçW§èérজঝঞḄ]^஺êëìÁÇíîéᔣ]^জZᐭ〉ᮞÃ⁐ñᜫáâIᡂó஺ð¶⏚஺_____________________O1ᙠ]^ঝZᐭôᮞÃ⁐ñᜫZᐭᮞÃ⁐Ë——ᐗð>õ⏚ᐙᑖ6õ⏚ø$%ù¬BÃ⁐ü஺áân____________(ý“ᡂ7÷Zᐭõ⏚ø2஺ó”ᡈ‘ᡂ”)$%஺ঞ↾ᨵ⁐ᩩ஺!illᡂḄᩩ3஺ூ#$ᑖ᪆௃(▅*ᧇ,-./0ᓄ╅ூMg(OH)Cl3᧕ᑖ56ᡂ789:;ᓄᱥ=HC1>?஺3@ᩩAᵫ6ᡂHC1>?CDECᕈ⏚ឋ./0ᓄ╅ூMg(OH)Cl3᧕ᑖ5ḄᓄIJK/L஺ூMᫀ௃(1)Mg+2HCl=MgCU+H2T(2)◀Q⊤☢Ḅ;ᓄᱥ(3)জ.0ᓄ╅᧕CDঝ.X>YZ6ঞ.0##C1ᡂঠ.ATMg(OH)Cl=MgO+HClTூ5᪆௃ூ\]1^5௃

21╅_`a⏚bc6ᡂ0ᓄ╅=d>ebcJK/LfMg+2HCl=MgCl+HT22ூ\]2^5௃╅ḄᓄIឋghijkl=m>@Ḅ;>bc6ᡂ;ᓄ╅⌚oᙠ⊤☢qᵨṺᡭu╅ᩩḄvḄA◀Q⊤☢Ḅ;ᓄᱥwூ\]3^5௃xyᎷ{fᵬ}I~Lᮞ⁐@MgCh,A0ᓄ╅᧕CD,ᡂwf1fᔣজ@ᐭ〉a⏚$L!Iᡂᓽᨵ╅ᡠLfᮞ⁐ᜫX>YZ6w2fᙠঝ@ᐭ`⏚ᐙᑖbcᐭ⏚Cᮞ⁐ᜫᐭ⏚CZ6⁐_0Z60ᓄ⁐¡ᮞ⁐@0ᐗ£஺!nᡂw#$ᑖ᪆fᓄIbcqᐗ£Ḅ8¤ᑣ6ᡂḄ;ᓄᱥL;ᓄ╅ᡠ./0ᓄ╅3᧕ᑖ5ḄᓄIJK/LfA\Mg
OHCl=MgO+HClTo¦ஹ¨©⚪ᐳ6ᑖ¡30.¬ᨵ7ᒹ®⁐¯°±-²⌕ᡂᑖA;ᓄ´Lµ¶®⁐¯°@;ᓄ´ḄgᑖᦪᓄIᐶ¹\º}I»᝞½fᙠ¾ᨵ200g`¿⏚ḄÀÁ@ᐭ7¶e®⁐¯°ᤅÃEᐸᐙᑖbcÅᔣᡠÆ@ÇÈÉᐭ7¶e®⁐¯°ᤅÃEᐸᐙᑖbcÅÅKᡠÆᦪÊ᝞½⊤±-®⁐¯°@ᨵḄᩖgÌCDÍ_`¿⏚bc¡fÉᦪÇ7ÉÇÈÉ®⁐¯°31.25g20g225g240gÎÏM½ᑡ]⚪:

22(1)e®⁐¯°@;ᓄ´ḄgᑖᦪL஺(2)¨©ÒÓᡠᵨ`¿⏚ḄCggᑖᦪAÔÕÖூMᫀ௃(1)80%(2)5f_`¿⏚×ᐰbcὑ;ᓄ´ḄgL240g-200g=40g,{`¿⏚@CggLxCuO+HSO=CUSO+HO2442809840gx80_40g98--TA-49g`¿⏚ḄCggᑖᦪA=Û~ஹ100%=24.5%200gM:ᡠᵨ`¿⏚ḄCggᑖᦪA24.5%஺ூ5᪆௃ூ\]1^5௃᪷ÊᦪÊᑖ᪆,-fÇ7Éᐭ®⁐¯°31.25g,CgÞ225g-200g=25g,ÇÈÉᐭ®⁐¯°20g,CgÞ240g-225g=15g,ßàÇ7Éᐭ®⁐¯°@;ᓄ´ᐰá×ᐰbcâ`¿⏚ᨵᒕä,ᑣCgÞḄgL;ᓄ´Ḅgᓽ®⁐¯°@;ᓄ´ḄgᑖᦪLUT^^X100%=80%w31.25gூ\]2^5௃᪷ÊᓄIJK/ᵫ;ᓄ´Ḅgåy¿⏚Ḅgåy`¿⏚ḄCggᑖᦪ^5æMᫀ஺

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