2021年广东省江门市中考化学学业水平调研试卷（附答案详解）

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2021
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ᔣᯚᑮ“ᘙ”ḄGூhiLy௃2Na+2H2஺=2NaOH+HTG2ூhi௃!ᰚᓄG89U;ஹ╅&'()╅*ᒓ,-./Ḅ01ឋ)╅3஺89I;<1>᪷ᐭ@Aᙠ☢ᰚᓄᡂFᳫὃ⇋ḄᱥᳮឋGLᔠᡠOPQ;᪷ឤὃ⇋Gூhi89௃᪷jkḄlimnὃ⇋GூhiLy௃᪷m}~ḄᑏmnᑏᓄOm}~Gூhi௃᪷ḄᰚJKὃ⇋G89E;᪷hiᑖ᪆Ly஺᪷¡ᨵPQᙠ¢£¤¥Ḅ¢¦§¨PQᙢᜧ«¬5®¯°⚪ḄV²⌕´32⚓ᐳ35⚓

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33)SO!-2NaOH+CuS0=Cu(OH)I+Na2sowᡈCa(0H)2+CuS0=Cu(0H)I4242+CaS0)J°ᢗ²ᩔ´µ¶⁚¸ᵨ@4ூ᪆௃%¹º»%@ᙠ¼½⁐ḄJvᨵiᡂ¿ᱥiḄÀÁᱥᳮ¼ᓄÃq@ᑖÄÅÆᨵᦋ¼!ᦑÈ%ᨵ!¹ºm%VWÉÊ1%⌕ËÌÍÄḄÎᙠbᐭ8nᓄ?KLᡈ8nᓄ┛KLÐÑi½⁐ᑣÒËÓ@ÔᨵÌÍÄᓄtuvw%2NaOH+CuS()4=CU(0H)I+Na2sO4ᡈCa(0H)2+CuS0=Cu(0H)1+CaS02424%VWÉÊ2%⌕ËD⏚᪷ÍÄḄÎᙠÖ×ØÙÚÓ@ÁÛÜbÝÙÞß⏚(àḄ᣸◀=⏚᪷ÍÄḄÎᙠ)áËâãäMåbæå¡⏚£KLᡈ6ᓄ£KL,ÐÑiè⁐ᑣËÓ@ÔᨵD⏚᪷ÍÄéãÍÄêD⏚᪷ÍÄëᔠᡂḄD⏚£ì⁐!ᦑÈ:VWÉÊVWãäVWî1.×ØÙÚÓ@ÁÛåbæå8nᓄ?KL(ᡈᨵ½⁐Ó@ÔᨵCM+8nᓄ┛KL)Ñi2.Ö×ØÙÚÓ@ÁÛÜbÝÙÞß⏚áËÑiè⁐Ó@ÔᨵḄÍÄâãäMåbæå¡⏚£KL(ᡈ6ᓄðKL)soñ(ᵨòó⊤õ)ூVWö௃8nᓄ?KL

34uὃwxὃyzRd./Ḅ{|ஹ}ὃyzᓄgm~Ḅᑏ(Rdklz,ᔠឋ஺Rd⚪^ὃḄw,ᒹRdmnc~Ḅ,RdfcRdḄ஺u⚪Rd:ᧇcRdᑖ᪆ᑮzḄf¡fឋ஺¢g£⌕ᐹ¥ᑖ᪆ᔠ¦§஺38.ூ©ᫀ௃«(1){20ᱏ┛ᱏ^¯⏚┛°x,±²⏚^³ᓄ´°y,h)'ᡂT¶ᓄ¯°20g+100g-115.6g=4.4g,CaCO+2HC1=CaCl+HO+COT,32221007344xy4.4g100_73_44xy4.4g'x=10g,y=7,3g,±²⏚^°ᑖᦪ◤x100%=7.3%,©±²⏚^°ᑖᦪ7.3%஺(2)┛ᱏ^┛ᐗ¹°10gxº=4g,┛ᱏ^┛ᐗ¹Ḅ°ᑖᦪ¼X100%=20.0%,©┛ᱏ^┛ᐗ¹Ḅ°ᑖᦪ20.0%஺ூ«᪆௃¯⏚┛c±²⏚h)'ᡂ³ᓄ┛ஹ"cT¶ᓄ¯᪷Lh)Ḅᓄgm~½ᐸ¿ᦪLDEklÀᐵm☢Ḅ|Ã஺u⚪Ä⌕ὃyg'᪷Lᓄgm~kl|ÃcÅÆḄÇÈ|ÃÉ⌕ÊËឋcÍឋ஺