ʱ : 扬州市梅岭中?017-2018学年第一学期初三化学期末试卷(含答?) - 百度文库ϿʼĶ
ཻP.ͼش: (1)Pĺ
(2)t2 ʱ30gaʼ뵽50gˮвϽ,γ80gҺ? (дܡܡ)
(3 )t2 ʱabcʵܽȰС˳ (д) (4)t1 ʱabcʱҺ¶ߵt2 ʱ,ҺСϵ (дѡ)
ġʵ̽⣨2С⣬26֣
2614֣ͼ1ʾʵȡװͼ,밴Ҫش.
(1)дͼбƣ (2)ʵȡռһƿ,Ӧѡõװ (ĸ) (3)غͶƱʱڷӦе_____̷벢ճַӦʣ壬ش⣻ ٲm mͲnжõIJ_____mи_____ ڷ벢ʣĹҪˮԭ_____ţ AʵЧ B֤ʣȫܽ CԼԴ ûյȻعֵԭ_____һ㣩 꼶ѧԾ6ҳ5ҳ
(4)ʵH2O2ҺMnO2,÷ӦĻѧʽΪ ,ͬѧBFװãͨˮⶨӦͲռˮDZֵƫ(ˮȷ),Ҫԭ
(5)ͼʾҽϴſռH2,H2Ϊ (ab) (6)ͼ2IʾĿȪˮƿжԱʵ,֤CO2NaOHҺȷʵ˷Ӧ,ӦĶԱʵ CO2NaOHҺӦĻѧʽΪ 2712֣ǼסͬѧйþᷴӦϵо
оһþᷴӦе仯ԼӦʵı仯
(1)ӦԹڷ,˵þϡᷴӦ Ӧ(ȡȡ) (2)ʵþƬ(v)ʱ(t)Ĺϵͼ1ʾ,t1-t2ʱڷӦӿҪԭ
оӦҺ̽
(3)ͬѧӦpHֽⶨԹҺ,pHС7,˵ͬѧҺ (ѡᡱС)
ͬѧϡ,ʹҺpHС7ȻþҺpHС7Ϊ֤ͬѧⶨ Һ,ʵҺԣ
(4)ͬѧظͬѧʵʱַӦԹҺpH7ʵͬѧʵ鲻ͬǣӦԹþʣࡣͬѧþˮӦ˼ʡͬѧΪ֤룬ڵη̪ˮзһδĥþ۲쵽ҺܿΪɫͬʱ۲쵽þɣռȼ壬ȼգʵдþˮӦĻѧӦʽ
(5)ȻҺpHֵСĻй,ȻҺ,ȻþҺ,ȻҺ ԣ
(6)ýˮһ·Ӧ.ʵ鷢ˮҷӦ,.ɴ˿ɼˮӦĻ˳ (йءء) о:ǿԭӽṹĹϵ
7ͼ2ΪþԭӡԭӺͱԭӽṹʾͼ.֪BaĻǿ,ݴƲ,ĻԳԭӵй, йأ оģȷþijɷ֣
꼶ѧԾ6ҳ6ҳ
ȡ3.2g汻þ,100gϡǡȫӦ,0.2g. (8) þнþ.(д,3)
(9)ӦҺʵ һλС
ѧ 1 C 11 C 2 D 12 A 3 C 13 D 4 D 14 A 5 A 15 B 6 C 16 B 7 A 17 BD 8 D 18 C 9 A 19 C 10 B 20 AC 21 +2 2H 3NH3 SO42- MgCl2 ѧʽ 22C A B E D F 231 2
ͨ 3)2 H2O 2H2 +O2 ӹɲͬ 4 D ۽ӿܽ 24.(1)3CO+Fe2O3
2Fe+3CO2 (2)Ͻ ̼3ͭ ̼
4Fe+2HCl=FeCl2+H2 ûӦ 5O2 ˮ(H2O) 25
D
26(1)ƾ ƿ (2) AE 3 ٹˣ AC
û
(4)ѧʽ ӷҺ©µ˫ˮռһ 5b
6ҺҺɵˮԱʵ
28
꼶ѧԾ6ҳ7ҳ
ʱacܽȶΪ20
þϡᷴӦ,ӿ췴Ӧ Ȼþ
ѧʽ й Ӳ 2.4g 11.1%
꼶ѧԾ6ҳ8ҳ