I 0,023.1023 Tinh d0 diQn licia axit axetic trong dungdich tr6n?
11,76 B.3 36 C 11€5 D 8,96 IỊ PITiN RIUN(;
IỊ PITiN RIUN(;
('l'hi sinh chi ltim mQt trong hoi pttitr) ÍIIAN I : TIITiO CIiT]ON(; TI{iNII C-IITTAN
CAU 41: X, Y la 2 axit don ch0'c, ke tiep nhau trong cung day dong dang Cho h6n hcrp gOm 4,6 gam X va 6,0 gam Y tdc dung net vOi Na dú thu dúo-c 2,24 lil H rdktcj. COng thríc phln t0' cua X, y lAn tu,ot ta
D.16%. D.8 Ạ C2H5COOH vd C.HTCOOH C. HCOOH vd CH.COOH B. C2H3COOH va C3H5COOH. D. CH3COOH va C2H5COOH Cdu 42: Cho cilc menh de dúo,i dAy :
a)CAc halogen (F, Cl, Br, l) co s6 oxi hod tu,-1 den +7.
b) Flo lA cfrSt cni co tinh oxi hod
c) F2 dAy du,o-c Cl, ra khoi dung dich mu6i NaCl
d)Tinh axit cua c6c hóp chAt vói hidro cua c6c halogen tdng theo th1,tu, HF, HCl, HBr, Hl
-: , -
Llac menh de luon dUng la
Ạb,c B.a,b,c c. b.d D.a,b d
Cdu 43: Khi dien phan dung dich mu6i trong nuóc,
muoidem dien phan la
Ạ CuSOa B. AgNO3.
tri so pH o khu vu,c gan mOt dien cuc tdng l€n. Dung dich
c. K2so4 .
Cdu 44: Oxi ho6 4,48lit C2Hădktc) bdng 02 (xuc tdc PdC12, CuC12)thu duoc cn6t X do,n chuc Toan b6 tuo,ng X
tren cho t6c dung vcvi HCN dú thi dúcvc 10,65 gam CH3*CH(CN)-OH. Hieu suSt cOa qud trtnh iao cH3-cH(cN)-oH tn, c2H4 ta
4.75%. B.50% c.60% D.80%
!a,1 as,: De phan biet ancol etylic nguyen chdt va ancol etylic co 15n nuoc, ngúoi ta thuong dung thu6c th1} l2r
ch6t ndo sau day ?
Ạ CuO B. CuSOa khan C. Benzen
D. KCI
D. Na kim loaị
S6 thu6c thrl'co th6 d0ng d6 ph6n biet
D.2. Cdu 46: Cho c6c thu6c thú sau . Na ; CuO (t") ; AgNO3/NH. va quy tim
hai dong phan khiic chr.r,c co cong thti,c phan tri,CrUuO ta
4.4 B. 3. c. 1
CAu 47:, Nguyen t6 hoa hoc la nhO,ng nguy€n ti, co cung
Ạ so notron B. s6 dón vi dien tich hat nhan
Ciu 49: Hod tan hodrn todn h6n hóp gdm Zn vd ZnO bing dung dic!.'t116. loing, dú Ket th0c thi ng,hi6m khong co khi thoSt ra, dung dich thu du,oc co ch0'a B gam NH4N,Q"v6113 4 gam Zn(NO3)2. Phdn trim s6 mol Zn co trong h6n hcrp ban đu ld bao nhi6u ? (adsbygoogle = window.adsbygoogle || []).push({});
Ạ93.34% B. 33,33% c.66.67% D. 16 66%
C6u 50: Trong tu nhien, dong co 2 dong vi t'3Cir va t'tCu, trong do dong vi "'Ctl chi6m 27%vd s6 nguy€n
tu, phAn trdm kh6itu,o-ng cia t'rCu trong CuzO la (biet kh6i luo-ng cia O bdng 16)
Ạ32,150k B. 88.82% c.63% D.64.29%