Hay chgn dap s6' diing. ;, i A
6.59. Cho 3,78 gam b6t nh6m phan iJng vira dii vdri dung dich mu6'i XCl^, tao thanh dung dich Ỵ Kh6'i lúc-ng chat tan trong dung djch Y giam tao thanh dung dich Ỵ Kh6'i lúc-ng chat tan trong dung djch Y giam 4,06 gam so vdri trong dung dich XCI3 . CTPT cua mu6'i XCI3 la : Ạ FeClj ; B. CrClj ;
C. BCI3 ; D. Kh6ng xac dinh.
Hay chpn dap an dung.
6.60. Nung 100 gam h6n hop g6m Na2C03 va NaHC03 den kh6'i lugng
kh6ng đi, thu dugc 6,9 gam chat ran. Thanh ph^n % theo kh6'i lugng ciaa h6n hop dSu la :
Ạ 16% va 84% ; B. 84% va 16% ; C. 26% va 74% ; D. 74% va 26%. Hay chgn dap an dung.
6.61. Hoa tan 13,92 gam h6n hop hai kim loai kitm thugc hai chu ki ke tid'p
vao nude, thu dugc 5,9136 lit Hj a 27,3 °C va 1 atm.
Hai kim loai do la :
Ạ Li va Na ; B. Na va K ; C. K va Rb ; D. Rb va Cs. Hay chgn dap an dung.
6.62. Dien phan nong chay hoan toan 14,9 gam mu6'i clorua cua m6t kim loai h6a tri I, thu dugc 2,24 lit khi (dktc) cf anot. loai h6a tri I, thu dugc 2,24 lit khi (dktc) cf anot.
Kim loai do la :
Ạ Na ; B. Li ; C. Cs ; D. K. Hay chgn đp an dung.
6.63. Dien phan 1 lit dung dich NaCl (du) v6i dien cue tra, c6 mang ngSn
x6'p tdi khi dung dich thu dugc c6 pH = 12.
The tich khi thoat ra a anot la :
Ạ 1,12 lit; B. 0,224 lit;
108
C. 0,112 lit; D. 0,36 lit Hay chgn dap an diing.
6.64. Chia m gam h6n hgp mu6'i NaCl va BaCl2 thanh hai phSn bang nhaụ
- PhAn 1 : Hoa tan hoan toan vao nudrc r6i cho tdc dung vdi AgN03 du,
thu dugc 8,61 gam két tiiạ
- Ph^n 2 : Dem dien phan nong chay hoan toan, thu dugc V lit khi a
anot (dktc). Gia tri cua V la : Ạ 6,72 lit ; C. 1,334 1ft ;
Hay chgn dap s6' dung.
B. 0,672 lit ; D. 13,44 lit.
6.65. Hoa tan hoan toan m gam h6n hgp gdm m6t kim loai kiem va m6t kim
loai ki€m thd vao nu6c, thu dugc 2,24 lit khi (dktc) va dung djch X. D^ trung hoa dung dich X cfin V ml'dung dich HCl 2M. Gia tri ciia V la : Ạ 110 ml; B. 200 ml ;
C. 100 ml ; D. 220 ml. Hay chgn dap sd dung.
6.66. Nhiet phan hoan toan m gam X gdm CaC03 va Na2C03, thu dugc (adsbygoogle = window.adsbygoogle || []).push({});
11,6 gam chat ran va 2,24 lit khi (dktc). Ham lugng phSn trSm CaC03 trong X la :
Ạ 6,25% ; B. 8,62% ; C. 50,2% ; D. 62,5%. Hay chgn dap an diing.
6.67. Dien phan nong chay hoan toan 19,0 gam mudi XCI2, thu dugc 4,48 lit
khi (dktc) a anot. X la kim loai nao ?
B. Ca ; Ạ Mg ;
C. Ba ; D. Sr ;
6.68. Cho V lit khi CO2 háp thu het vao 100 ml dung dich CăOH)2 0,7M. ket thiic thi nghiem thu dugc 4 gam kel tuạ ket thiic thi nghiem thu dugc 4 gam kel tuạ
Gia tri cua V la : Ạ 1,586 l i t .
B. 0,896 lit hoac 2,24 l i t . C. 1,586 lit hoac 0,896 l i t . C. 1,586 lit hoac 0,896 l i t . D. 0,896 l i t .
Hay chon dap s6' dung.
6.69. Hoa tan hoan toan 4,68 gam h6n hop muoi cacbonat cua hai kim loai A
va B thupc nhom IIA, thuoc 2 chu ki lien tiep bang dung dich HCl, thu duoc 1,12 lit CO2 (dktc). duoc 1,12 lit CO2 (dktc).
Hai kim loai A va B la :
Ạ Be va Mg ; B. Ca va Sr ; C. Mg va Ca ; D. Sr va Bạ Hay chon dap an dung.
6.70. Hoa tan hoan toan 23,8 gam h6n hop g6m mot muoi cacbonat cua kim loai kiim va 1 mu6'i cacbonat ciia kim loai kiem thd bang dung dich loai kiim va 1 mu6'i cacbonat ciia kim loai kiem thd bang dung dich HCl thu dugc 4,48 lit khi COjCdktc).
KhÓi lugng mu6'i khan thu duoc sau khi c6 can dung dich sau phan iJng la :
Ạ 28 gam ; B. 26,8 gam. C. 28,6 gam ; D. 26,0 gam. Hay chon dap an dung.
6.71. Nhung thanh nhdm nang 50 gam vao dung dich CUSO4. Sau m6t thdi gian, láy thanh nh6m ra, can dugc 51,38 gam. gian, láy thanh nh6m ra, can dugc 51,38 gam.
Khoi lugng Cu tao thanh la bao nhieu ?
Ạ 1,92 gam ; B. 0,64 gam ; C. 1,38 gam; D. 2,56 gam.
110
6 72. Trgn 8,1 gam b d l A l vdi 48 gam bot Fe203 roi cho tien hanh phan urng nhiet nhom a dieu kien khdng c6 khdng khị Kd't thuc thi nghiem, khoi nhiet nhom a dieu kien khdng c6 khdng khị Kd't thuc thi nghiem, khoi
lugng chát ran thu dugc la : j , . ; Ạ 61,5 gam ; B. 56,1 gam ; > .