Hay chon xu hucrng dung.
5.5. Day g6m cac kim loai de dang hoa tan trong dung dich HNO3 dac,
ngu6i la :
Ạ Mg, Al, Zn, Cụ B. Mg, Ag, Cu, Fẹ C. Mg, Zn, Ag, Cụ D. Zn, A), Ag, Nị
Hay chon dap an diing. 1
5.6. Cho cac phan ling :
1) Zn + AgN03 ^
2) Fe + H2SO4 dac, ngu6i ->
3) Al + HNO3 dac, nguCi -> 4) Ag + CuCl2->
5) Ni + FeCl3 ^
6) Mg + HNO3 rat loang -> . Cac phan ling khong xay ra g6m :
Ạ 4, 5, 6 ; B. 2, 4, 6 ;
C. 2, 3, 5; D. 2, 3,4. Hay chon dap an dung. Hay chon dap an dung.
g 7 Dien phan nong chay m6t mu6'i clorua ciia kim loai X. Ngudi ta nhan
tháy khi o catot thoat ra 5,4 gam kim loai thi 0 anot bay ra 6,72 lit
Cl2(dktc).
X la kim loai gi ?
Ạ K ; B. Ca ; C. Al ; D. Fẹ
5.8. Neu khi dien phan dung dich CuS04(du) ma a catot thu dirge 3,2 gam kim loai ihi a and thu dugc bao nhieu lit khi ?. kim loai ihi a and thu dugc bao nhieu lit khi ?.
Ạ 1,68 lit; B. 1,12 lit; , C. 0,896 lit; D. 0,56 lit ^ Hay chon dap so diing.
5.9. Trong qua trinh an mon hoa hoc cac kim loai, phan lirng gi xay ra ?
Ạ Phan ting trao đi proton. B. Phan ling hoa hop.
C. Phan urng phan hiiỵ D. Phan urng oxi hoa - khir.
5.10. Tir CaC03 CO the di^u chéCa bang cac each sau : . r
Ạ Nung CaCO, thanh CaO, r6i khir CaO bang CO (t°).
B. Nung CaC03 thanh CaO, r6i khir CaO bang H2 (t°).
C. Hoa tan CaCOj bang dung dich HCl thanh dung dich CaCl2, r6i dien phan dung dich CaCl2. phan dung dich CaCl2.
D. Hoa tan CaC03 bang dung dich HCl, sau do c6 can dung dich roi
lay CaCl2 khan dem dien phan n6ng chaỵ
Hay chon each tdt nhát. ,
11. TCr CuS c6 t h ^ dieu chéCu bang cac each : (adsbygoogle = window.adsbygoogle || []).push({});
Ạ Hoa tan CuS bang dung djch H C l , r6i dien phan dung dich C u C l j .
B. Hoa tan CuS bang dung djch H C l , sau do c6 can láy CaCh khan