Ạ 14,2 gam. B. 13,8 gam.
C . 12,7 gam. D. 15,3 gam.
3. Cho chát ran X tac dung vdi dung dich HCl dụ Toan b6 khi thoat duac dan vao binh dung 200 ml dung dich Că0H)2 I M . duac dan vao binh dung 200 ml dung dich Că0H)2 I M .
Kh6'i lircmg mu6'i thu dirgfc la
Ạ 14,2 gam. B. 12,8 gam.
C. 15,7 gam. D. 13,0 gam.
2 . T L ; L U A N ( 5 D I ^ M )
Cho m gam h6n hop h6t sat va b6t d6ng tac dung hS't vdi khi clo (dm
nong), thu duoc 18,35 gam h6n hop san phdm. Hoa tan h6n hgfp san ph^m \
nu6c r6i cho tie dung vdi dung dich NaOH du, thu duoc 12,90 gam ket tuạ
a) Viét cac phuong trinh hoa hoc.
b) Tinh thanh phSn % kh6'i luong m6i kim loai trong m gam h6n hcfp
ban dSụ
De so 2.4
1. T R A C N G H I E M K H A C H Q U A N ( 6 D I E M ) c a u l (1,5 didm) c a u l (1,5 didm)
Hoa tan 20 gam h6n hop hai mu6'i cacbonat cua kim loai hoa tri 1 kim loai hoa tri I I bang dung dich HCl du, thu duoc dung dich X va 4,48 ú
khi CO2 (or dktc). T6ng khd'i luong mu6'i trong dung dich X la Ạ 16,8 gam. B. 22,2 gam.
C. 23,6 gam. D. 21,7 gam.
2
Cau 2 (1,5 die'm)
Cho 10,8 gam kim loai hoa tri m tac dung vdi khi clo dir, thu dugc 53,4 gam
Oiu6'i cua kim loai dọ Kim loai da dung la
Ạ sat. B. nh6m. •
m C. crom. D. mangan.
Cau 3 (3,0 die'm)
D6't chay hoan toan 1,17 gam chát him co X, thu duoc 2,016 lit khi CO
(đktc) va 0,81 gam H2Ọ
1. Thanh pMn phan tu cua X g6m
Ạ C, H va Ọ B. C va Ọ
C. C va H . D. Ca A va C d^u dung.
2. Bie't kh6'i luong mol cua X la 78 gam. C6ng thiic phan tijr cua X la
Ạ C2H4. B. C,H,.
C. C2H2. D. QHg.
2. Tir L U A N (4 D I E M )
Dan 8,96 lit h6n hop khi etilen va axetilen (cf dktc) vao binh dung dung dich nu6c brom dụ Khi phan img xong, tháy khd'i lugng binh dung dich nude
brom tang them 11 gam.
a) Vie't cac phuong trinh hoa hoc.
b) Xac dinh thanh phan % thé tich m6i khi trong h6n hop.
X .£
De so 2.5 'I ^;rif g r j ' ; j , j i V ^
1. T R A C N G H I E M K H A C H Q U A N ( 6 D I E M ) v ^ i > ^ f ) h
Cau 1 (1,5 die'm) - A O f^/
Khi d6't chay hoan toan 8,96 lit (of dktc) h6n hop etilen va axetilen, trong d6 thé tich cua etilen gáp 3 Mn thé tich cua axetilen, cSn V lit khi oxi va tao ra
m gam khi COj. Gia tri cua V va m iSn lugt la
Ạ 27,32 va 34,6. B. 26,76 va 35,2 gam.