B a i 2 5 : C h o 4,6 g a m k i m l o a i k i e m M t a c d u n g v d i \\igng niXdc (d\i) s i n h
r a 2,24 H t H2 ( d k t c ) . K i m l o a i M l a
A . K . B . N a . C. L i . " D . Cs.
B a i 2 6 : C h o d a y cac c h a t : F e , FeO, Fe203, Fe(0H)2, F e ( 0 H ) 3 . So chp +
t r o n g d a y k h i t a c d u n g v d i d u n g d i c h HNO3 l o a n g s i n h r a s a n p h a n . k h i (chufa n i t d ) l a
A . 5. B . 2. C. 4. D . 3.
B a i 2 7 : C h o 5,5 g a m h o n hap g o m h a i k i m l o a i A l v a F e v a o d u n g dich H C l (du), t h u dugc 4,48 l i t k h i H2 ( d k t c ) . K h o i l u g n g cua A l v a Fc
t r o n g h 6 n hap I a n l i / d t l a
A . 2 , 7 g a m v a 2 , 8 g a m . B . 2 , 8 g a m v a 2 , 7 g a m . C. 2 , 5 g a m v a 3,Ogam. D . 3 , 5 g a m v a 2 , 0 g a m .
B a i 2 8 : C h o 6,85 g a m k i m l o a i X thuoc n h d m I I A v a o nUdc, t h u dugc
1,12 l i t k h i H2 ( d k t c ) . K i m l o a i X l a A . Sr. B . C a . C. M g . D . B a . B a i 2 9 : C h o m g a m F e t a n h o a n t o a n t r o n g l i f p n g d u d u n g d i c h HNO3, t h e t i c h k h i N O ( s a n p h a m d u y n h a t , a d k t c ) t h u duoc l a 1,12 l i t . G i a t r i cua m l a A . 2,8. B . 5,6. C. 4,2. D . 7,0. B a i 3 0 : P h a t b i e u n a o sau d a y dung? A . Sat b i o x i h o a b d i clo t a o t h a n h h d p c h a t sMt ( H ) . B . S a t t a c d u n g v d i a x i t l o a n g H2SO4, H C l d e u t a o t h a n h h u p c h a t sit ( I I I ) . C. H u p c h a t s a t ( n ) b i o x i h o a t h a n h h u p c h a t s^t ( H I ) . D . H u p c h a t sat ( H I ) b i o x i h o a t h a n h sit. B a i 3 1 : M o t h u p c h a t cua c r o m c6 k h a n a n g l a m hoc c h a y S, C, P , C2H5OH k h i t i e p x u c v d i n o . H u p c h a t do l a A . CrOs. B . Cr203. C. C r ( 0 H ) 3 . D . Cr2(S04)3.
B a i 3 2 : K i m l o a i X cd t h e khuf duuc Fê^ t r o n g d u n g d i c h FeCl3 t h a n h Fê* n h u n g k h o n g khijf duuc H"^ t r o n g d u n g d i c h H C l t h a n h H2. K i m l o a i X l a A . M g . B . F e . C. Z n . D . C u . B a i 3 3 : T h u o c thijf de p h a n b i e t b a d u n g d i c h r i e n g b i e t : N a O H , H C l , H2SO4 l o a n g l a A . B a C 0 3 . B . A l . C. F e . D . B a S 0 4 . B a i 3 4 : N i l o n - 6 , 6 l a m o t l o a i A . tu a x e t a t . B . tu p o l i a m i t . C. poliestẹ D . tu viscọ
B a i 3 5 : C h o m o t l o a i q u S n g chiJa sit t r o n g t U n h i e n da duuc l o a i bo t a p
c h a t . H o a t a n q u S n g n a y t r o n g d u n g d i c h HNO3 t h a y cd k h i m a u n a u
bay r a ; d u n g d i c h t h u dUUc cho t a c d u n g v d i d u n g d i c h BaCl2 t h a y cd
k e t t i i a t r S n g ( k h o n g t a n t r o n g a x i t m a n h ) . L o a i q u S n g do l a
A . x i d e r i t . B . h e m a t i t . C. m a n h e t i t . D . p i r i t s ^ t .
B a i 3 6 : K h i cho Fe t a c d u n g v d i d u n g d i c h HNO3 l o a n g t h a y t h o a t r a m o t k h i k h o n g m a u , h o a n a u t r o n g k h o n g k h i . IChi d d l a
A . N2. B . N O . C. NO2. D . NH3.
B a i 3 7 : C h o d a y cac c h a t : N a H C 0 3 , NaaCOg, CăHC03)2, FeCh, AICI3. So
c h a t t r o n g d a y p h a n uTng dUUc v d i d u n g d i c h N a O H l a A . 4. B . 2. C. 3. D . 5.
B a i 38: K h i dun ancol X (cong thuTc phan tuf C2H6O) vdi axit Y(c6ng thiJc phan tuf C2H4O2) CO axit H2SO4 dSc lam chat xuc tac thu diTdc este c6 cong thurc phan tuf
Ạ C4H10O2. B. C4H8O2. C. C4H10O3. D. C4H8O3
B a i 39: K h i dun hdp chat X vdi dung dich NaOH thu dtfcfc hon hop 2 chat
hOu ca Y (C2H4NNa02) va Z (CzHeO). Cong thufc phan tuf cua X la
Ạ C4H7NO2. B. C4H10NO2. C. C4H9NO2. D. C4H7NNa02.
B a i 40: Neu cho dung dich Na2C03, vac dung dich FeCh t h i xuat hien
Ạ ket tua mau nau dọ
B. CO k h i thoat ra, sau do chuyen dan sang mau nau dọ