Kiêm tra chương 1- hóa 9

KIM TRA CHT LNG LN 1
Mụn : Húa hc 9- Thi gian 60phỳt
:
Cỏu 1: (2,0 õióứm)
1. Vióỳt caùc phổồng trỗnh phaớn ổùng xaớy ra trong caỳc thờ nghióỷm sau:
a, Cho Ba vaỡo dung dởch CuSO
4
. b, Na
2
O vaỡo dung dởch ZnCl
2
.
c, Cu vaỡo dung dởch Fe(NO
3
)
3
. d, Al vaỡo dung dởch H
2
SO
4
loóng.
2. Vióỳt 4 PTPặ thờch hồỹp cho sồ õọử sau : Ba(NO
3
)
2
+ ?

NaNO
3
+?
Cõu 2: (2,5 im)

1. Cho 27,4 gam Ba vo 400 gam dung dch CuSO
4
3,2% thu c khớ A, kt ta B v dung dch C. Tỡm nng
% ca cht tan trong dung dch C.
2. Ch dựng thờm nc, hóy nhn bit 4 cht rn: Na
2
O, Al
2
O
3
, Fe
2
O
3
, Al cha trong cỏc l riờng bit. Vit cỏc
phng trỡnh phn ng.
Cõu 3: (3,0 im)
Ho tan hoaỡn 8,8 gam họựn hồỹp Mg vaỡ MgO bũng mọỹt lổồỹng dung dởch HCl 14,6%
(dổ 10%). Khi Pặ hoaỡn toaỡn ta thu õổồỹc 28,5 gam chỏỳt rừn khan.
1.Tờnh khọỳi lổồỹng mọựi chỏỳt trong họựn hồỹp õỏửu.
2.Tờnh khọỳi lổồỹng dung dởch HCl cỏửn lỏỳy.
3.Tờnh nọửng õọỹ % caùc chỏỳt trong dung dởch sau Pặ
Cõu 4: (2,5 im ) Cho 22,2 gam hn hp bt Al v Fe t/d vi 200ml dd CuSO
4
2,5M. dựng a khuy u cho hh p hon ton, sau
ú em lc, thu c kt ta gm 2 kim loi cú khi lng 37,6 gam.Cụ cn dung dch sau phn ng thu c m g mui.
a/ Tớnh khi lng cỏc kim loi cú trong hh ban u?
b/ Tỡm m ?
---------------------------- Ht --------------------------
BI LM

..




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