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已知金属铝的熔点比金属镁高,则镁铝合金的熔点(  )



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(2)˽ͭϽϽڹҵ͸߿Ƽ...[ѧ] [̾]þϽ þ:þ,...Ͻڴص: (1)Ͻ۵ĸ...
2017߿ѧһָϰ:()ר3.3+þ...
Ͻ۵þ۵ 3. ϳһ 2016 ¿ַƱ: () ֪õϡ NaOH ҺΪ 3mol/L. ͼ...
ڶµڶ仯
й˵ȷ( ) A.þϽ۵þ۵֮ ... 2й Al(OH)3 ͼ - 4.֪,Al(OH)3 ...
... ϲ()³ư
:C 5.֪·Ӧ:2Cu+ ֤...ǿѧ¿)һþϽѧʽΪ ...Ͻ۵þ۵֮ :Ͻ...
...:ʱҵ() 3.4;㷺 ...
˵ȷ ( A.Ͻ۵þ۵֮ B.úϽ...(5: Fe(OH)3 Fe(OH)2 Cu(OH)2 ʼʱ pH 1.9 7....
þϽ
þϽ_רҵϡҵĿ¼һ ......þϽڹӦĽṹ...۵ 650,۵ȡҲ ؿ...
;㷺
Ͻ۵þ۵ B.˺Ͻȫ...Ҫ: ֪: 4CuFeS2+2H2SO4+17O2...Ķ, AD ȷ;Ͻеþ...
...߿ѧרͬѵ:;㷺...
NH4CuSO3 10 2+ A.Ͻ۵þ۵֮ B....(5: Fe(OH)3 Fe(OH)2 Cu(OH)2 ʼʱ pH 1.9 7....
þϰ
˵ȷ A.Ͻ۵þ۵֮ B.úϽþԪسʸ,Ԫس C.1mol Mg17Al12 ȫõĻ Y ...
ʡǿѧ2014ѧڵڶ¿ѧ Wo...
һþϽѧʽΪ Mg17Al12,д,úϽһ... ˵ȷ A.Ͻ۵þ۵֮ B.úϽþ...
رǩ
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