Cho biet khdi lugng nguyen tii (theo dvC) cua cdc nguyen td: H = li He = 4 ,C = 12; N = 14; O = 16; F ^ 19; Ne = 20; Na = 23; Mg = 24; Al = 27; S = 32; CI = 35.5; K = 39; Ca = 40; Cr = 52; Mn = 55; Fe - 56; Cu = 64; Br = 80; Ag = 108; Ba = 137.
JVIa de 112
fit THI THUr DAI HQC VA CAO DANG
M o n t h i : Hoa hoe
Thai gian lam bai 90 phut
Ụ PHAN CHUNG CHO TAT CA CAC THi SINH (40 cSu, tCr c^u 1 dfen cau 40)
B a i 1: So electron doe t h a n trong mot ion Fê"^ (Z = 26) d t r a n g t h a i
i khong bi kich t h i c h la:
f Ạ 3 B. 2 C. 4 D. 5
B a i 2: Cho cac ion N a \, F", Ô". Day nao diTdi day dupe s^p xep . diing theo chieu giam dan ban k i n h ion?
I Ạ Mg'^> Nâ> F - > Ó- B. Nâ > Mg'^ > F" > Ó" ; C. F" > M g ' " > Na" > Ó- D. Ó" > F" > Na" > M g ' " . I'l
B a i 3: Hpp chat nao dtfdi day trong phan tuf c6 ca lien ket ion va l i e n , ket cpng hoa trỉ
I Ạ NH4CI B. CaFa C. PH3 D. CH2O
B a i 4: Phan iJng
K M n 0 4 + SnS04 + H2SO4 -> Sn(S04)2 + MnS04 + K2SO4 + H2O, cd
tong cac he so can b^ng (nguyen, t o i gian) la
A . 3 1 B. 30 C. 62 D. 32
B a i 5: Dung dich nUdc cua X l a m quy t i m nga mau xanh, con dung dich Y khong l a m quy doi maụ T r p n X vdi Y thu dupc ket tuạ X, Y Ian lirpt la
Ạ NazCOa va KNO3 B. K2CO3 va BăN03)2
C. K O H va FeCl3 D. N a O H va K2SO4.
B a i 6: Trong trudng hpp nao sau day tao t h a n h dung dich l a m quy t i m hoa xanh? Biet cac t h i nghiem deu dung dien cifc trcf
Ạ Dien phan dung dich KNO3. B. Dien phan dung dich CUSO4
C. Dien phan dung dich N a C l D. Dien phan dung dich ZnCl2. B a i 7: Hoa tan het m gam bpt Cu trong dung dich HNO3, toan bp k h i
1^ NO (duy nhat) thoat ra cho tac dung vdi 2,24 l i t oxi (dkc) dupe h6n
ML hpp k h i Z. Hap t h u het Z vao nude dupe dung dich chi chda HNO3. Hp Gia t r i m la