银链变黑是什么化学反应?

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/26 19:16:24
xYYr#߁HrLȡC'l 4v+XhpkU8h&l+1̚w ʓa(þY5zR!G_7_o}~ _D_9-QK^'$';ssԹysQ$ו1^xYJ_W]J ~(xKkeZKܟyuP9jyƐ/O.hFUoݦE-plj]،{n[4Rθ{7|›!U<JivTWrUP[ވXY>{˲x1>bWPOpoĤ YwhiN@a-D'MgI珟dAxN1Lsr{@>٭-4{KRw+۶p]1w2kϺĺ:Ȋ# :Ypᐻ6b˅<צן/ [WVhK篓ț7x20sh7eԩY!TITa1bl$FXڱٗń^ _IJdNUj!,U-ov{1Io (X֛3b/99j.)'7FRP&*.VYy 6-BѺCSy3iѶݥN-8T42l3C0Ԕ A}$>g)>g9#-osE58YJU ><-,>tS8e8QlQ_4UfRW;JДWZdWKV~r:(Tmp"N:[HO͹Aa<+jG*kn,(,zb&@+"2cY8FK DkTp )\9.&\['$cėԌ$±5m*Y>I~Aܟ-zY8Q:2념GA#߿ǕS!-2OP hV鬄7Bf 1޼g}+S1дDCӡ)7a'%}H 9:eszr:wiA$q# w0g۟[{ݏFnP!8V4eCTY\pUgP٨ 'Yb_Ո )cŘMU2nIZ*cXǹcHvciM&x .VJ0&r@m6| m(Q.f1Sk#t2ʉ5  ,["#9f4!yqY@L1R_]3&G] %$hlrB*E7C *6Hfi,='Z OQcV_*>dB,a%w򦟧R ž 5KSBIxj ا%0JBgoм k든>"_z].gv]) c5o@Qh{ShP3i\/:Ŵ?=!F6.(3c["~?Ũө\=Ppfهn)83T}=HAxsQ6.d@݉D.-ЎGYo~qWUFO-2¡ Q+N%[*+!%/ep@!Ut ~3+w%<^0@`U ad+FPM@݇qتb*'ha0~]s8H@@8)i믘DV9N]چLƒ?%ᡐ6o|b{.{tgDz)+%ߦ qavT뫣o˔Bȯ:'W0?qUD{?[{|