I 0,023.1023 Tinh d0 diQn licia axit axetic trong dungdich tr6n?
PI{,IN IỊ TIIIIO CIIÚONG TIIINI{ NANG CAO
C6u51:Dunnongh6nhop2ancoldcynch0,c,dongđnglienti6pdl400C(coHzSOađcxuctac),thu dvqc2,7
gam H2O vit 13,i gam h6n ho-p 3 ete co s6 mol bing nhau Cong thuc 2 bncol ld
Ạ C3H5OH ; CaHzOH. B. C4HgOH ; C5H11OH'
C. CH3OH ; CzHsOH D. C2HsOH ; CgHuOH.
C6u 52: Cho m gam tinh bot len men thdnh ancol etylic vcvi hieu sudt 8t%. Toan bo lúcrng CO2 sinh ra durgc hip thqt hodn toan vao dung dich CăOH)z dúo-c 550 gam k6t t0a vd dung dich X. Dun kI dung dich X thu th6m dúoc 100 gam
tet trla Gi6 tri cua m ld
Ạ 550 B_ 810 c. 750 D. 650.
NaAlO2 CoHsONa, C2H5OH Ho6 ch6t ndo
Ciu 53: Co 4 lo rieng biet ch0'a c6c dung dich ri6ng : NH4HCO3
dúor d6y co th6 dung de phdn biet dúo-c 4 dung dich tr6n ? CAu 48: Cho phin úng sau 2l\O 1k) + O: {k} .+
Phdn ung se dich chuy€n theo chieu thuan khi
Ạ giam dp stt6t.
C. giam nhiet d0 vd tdng aP su6t.
2NO2 (kJ , .:\H = -124kJ B. tang nhiet do
D. tang nhi6t Co vd gidm drp sudt
I
It
B. \r'
Ạ dung dich BaCl2 B. dLrng dich NaOH C. khi CO2
Ciu 54: Úng vor cong thríc CaHoOz co bao nhieu dong pnan t6u tao dich KOH, khong tdc dung vói Na ?
Ạ8 B.5 ụo
D. dung dich HCI
mach hó t6c dung dúoc vcri dung D.4
C6u 55: Co 4 dung dich rieng biet . NaCl, H2SO4, Na2C03, HCl. Ee nhan bi6t dúqc 4 dung dich tr6n, co th6 dung
dung dich
Ạ quy tim B. BăHCOg)2. C' phenolphtalein. D' AgNOs'
Ciu 56: Hod tan 3,23 gam. h6n ho,p gom CuCl2 vdr Cu(NO:)2 vao núcrc dúcrc dung dicl X Nhfng thanh kim
toar Mg vdo dung dich L d6n khi Oung Oicfr m5t mau xanh roi l6y thanh Mg ra, c€rn lai thAy tang thdm 0,8 gam. Kh6i lúo-ng mu6i tao ra trong dung dich lir
Ạ 1,45gam. B. 1,15gam. C.2,43gam D'4,13gam'
C6u 57: Cation tao thirnh tu,kim loai M co cdu hinh electron lcrp ngodi cung ld 2s22p6 Cau hinh electron lop
.nT]::in cia nsuyen td M kho#Jlf ra
c. 3s1 D. 3s23p1
C6u 5g: Khicho tu,ng ch5t KMnOa, MnO2, KC|O3, K2Cr2Olco cung s6 mol t5c dqng hodn todn voi dung dich HCI
đc, dúthi chdt cho luong khi Cl2 it nh6t le
Ạ MnOz. B. KC|O3. C-KzCrzOt. D' KMnOá
Cdu 59: Mesitilen (X) la mot hidrocacbon thom co cong th0'c ph6n t0'CrH,, Biet X khong c6 khd ndng ldm mAt mdru dung dich brom ; khi X t5c dung vo,i brom theo ti te t : t trong di6u kien dun nong co b6t sit hoic khong c6
nol raf ri6itru,ong hóp deu tao du,Jc mot d5n xu5t monobrom duy- nhAt,_96ng th0'c c6u tao cua X ld