I 0,023.1023 Tinh d0 diQn licia axit axetic trong dungdich tr6n?
I-ICOOCHzCHzCHT B.EH:CHzCH2COOH C CH:CHzCOOCH: D CHTCOOCH2CH
C. CH:CHzCOOCH: D. CHTCOOCH2CH3
Ciu - 38: Didu ndo sau dAy khOng ditng?
ạ an6;nit tac dpng vOi CulOU;2 ttng mOi trucrng kiAm khi dun n6ng thu duoc k6t tua do g4ch' , / ts. Phenol t6c dung v6i dung dich NaHCO3 giAi ph6ng CO2'
v C. Glixerol t6c dung v6i Cu(OH)z cr nhiQt dQ thuong tao dung dich xanh lam. 1D. Axit axetic hoa tan cu(oH)z o nhiQt dQ thuong tao dung dich miruxanh.
CAu 39: Cho c6c chAt sau : CHgCObCHT ; CH3-C6h4-OH ; CHr-Chr-NHrCl; CH:-CHOH-CHzOH;
{CHlCurolfr cur-O-CH,
"a Cri:iOoH. Hay ctro Uict trong sO circ chht trOn, c6 bao nhi0u ch6t t6c dpng
v6i NaOII 0 nhiet d6 thuirng?
.1\
(X./\ B. 6 c.4 D. s
cY+0, cho so d0 phnn irng: cH3cHo ;* (X) * CH:COOH ---, (y) * CH:COONa ,Bi6t ring X' y
ci, cirng s6 nguyOn tir cacbon. X vd Y co th6 ld :
Ạ CFhCHzOH vir CH:COOCH: B. CH:CHzOH vd CH3COOCH:CHz C.'CH3CHzOH vir CHTCOONHa D' CH3COOK vi CH:CHzOH I,HAN RftNC: (Thf sinh chi ctuoc ldm I trong 2 phdn: phfrn I hogc phiin II)
phAn Ị Theo chucrng trinh chuin (10 cdu, til cdu 41 itdn cfiu 50)
Cflu 41: Cho c6c ch6t : CHTNHz (1); CoHsNHz Q); (CH)zNH (3); (C6H5)2NH (a); NH3 (5). Trat tir tang dAn tinh bazs giac6c chAt ld:
r. Ạ (r) <(5)<(2)<(3)<(4)
I rc"
(4)<(2)<(s)<(t)<(3)
Ciu 42: Oxi hod hoirn todin 15,1 g h6n hqp cdc kim loai Cu, Zn, Al.bing oxi thu duoc22,3gh5n hqp c6c
. ,oxit. Cho lugng oxit ndy tan trong luqng uiu du dung dich HCl. Kh6i luqng mrr6i th.t duoc lh:
V Ạ 47 ,05g B. 63,99 c. 34,5 gam D. 31,0759CAu 43: PhAn img ndo sau dAy co phucrng trinh ion thu ggn ld: 2ifl* + q2- -+ HzS CAu 43: PhAn img ndo sau dAy co phucrng trinh ion thu ggn ld: 2ifl* + q2- -+ HzS
Ạ NazS + 2HCl -+ 2NaCl + HzS.
V C. CuS + 2IlCl -+ CuClz + HzS
Ạ Czl-loOz vd C+HroOz. C. CtHaOz vd CrHsOz. B. (1)<(5)<(3)<(2)<(4) D. (2)<(1)<(3)<(5)<(4) B. 2CH3COOH + K2S -+ 2CH3COOK + H2S' D. FeS + 2HCt -+ FeClz + HzS. B. CzHoO vd CaHroỌ D. CH+O vd CgHsỌ
Ciu 44: fhOi luqng glucozo cin d0 diOu chO 0,2Iitruou etylic (kh6i luqng ri6ng cira rucr,u etylic nguy6n
. /, chat ia 0,8g/ml), hi6u su6t 80% id:
\/ ' Ạ 185,6eam B. 196,5 gam C.212 gam D' 391,3 gam
u
CAu 45: Cho 3,6 gam axit cacboxylic no, dcrn chric X t6c dgng hoirn_todn vdi 500 ml dung dich g6m
nOH O,f Zfr,f vd NaOH 0,IZM. CO can dung dich thu dugc.8,28 gam h6n hqp chAt rin khan. COng thrlc - I nhdn tu cua X ldr
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