pU rV rm cHQN IrQC srNH GrOr cAP HUYTN - LoP e @t Mdn thi: HOA HQC (Thdi gian: 120 phrit khilng kA tudt gian giao nhQn tti) Dr cuiNH rHU'c ciu I (3,5 tli6m): Cho c6c chSt: cu, FeS, Fe3Oa, FeCO: Fe(OH)] tAn lugt tac dung v6i: a) Dung dich b) Dung dich HC1 HzSO+ dic, n6ng Vi6t phuong trinh h6a hoc cua cg9 phAn irng xiry ra' *5i tq dUng ri6ng Uial Cffu 1Z,O Oi6m): Co 19 rnAt nhdn, if MgSoa, HCl, xuou Hay irinh bdy phuong ph6p hou h9 dung dich sau: NaCl, d6 nhan mdi 1o ma kh6ng TqJ duo-c dung th6m h6a chAt ndo kh6c' C6u III (3,5 tli6m): c6 l ) Tu cac nsuy€r, iiO, ban dAu ld: NaCl, CaCO3, HzO, kh6ng khi, thiOt bi vd chit x[rc t6c hoa du, co the d;a; ch6 duo.'c NaHCOT' NH+NO:, CaCl2, (NH2)2CO' Viet c6c phuong trinh hgc diOu ch5 c6c chAt 2) Trinh bdy phuong ph6p hoa hoc dti tacn lAy CO2 tinh khi6t tu h6n hop 96*, COz' SO2, SO3 vd 02., cau ry (3,5 tli6m): cho 8,1 gam kim 1o4i M t6c dung v6i 4,8 gam oxi, d6 ph6n ung xay rahodn toirn thu duoc chAt r6n A Cho A viro dung dlch HCI (dung du l0%) thu dugc dung dich B vh 3,36 lit tho6t (do o dktc) a) X6c dlnh kim 1o4i M' 15,6 Uj Cno V mi dung dich NaOH 2M vdo dung dich B, phAn ung k6t thuc thu dugc gamk6ttua.TinhV .i - : , Lau V (4,5 rli6m): Chia a gam h5n hop X g6m Cu vd Fe (o dang bdt) phAn bang r nhau: phAn 1: Cho t6c dung v6i dung dich HzSOa lo6ng, du thu dugc 3,36litkhi H2 (do o dktc)' pfran 2: Cho t6c dpng v6'i dung dich HzSO+ dic, n6ng, du thu dugc 6,72 lit SO2 nhAt (do cr dktc) phil 3: Cho t6c dung voi 500m1 dung dich AgNo3 lM Sau ph6n u'ng xay hodn tolrn thu dugc dung dich Y vd b gam chAtrdnZ' a) Tinh gi6 tri cua a 13 b Uj Or"g dich Y c6 th6 hda tan tOi da bao nhiOu gam Cu? , r j cno-a"ng dich C6u VI (3,0 tli6m): y phan u'ng htit vcri dung dich Na2S Tinh kh6i luo-ng kOt tua tao l) Cho c6c dpng cU vA h6a.ch6t sau: c6c thuy tinh, 6ng hirt, duong mia, axit sunfuric d[c"' d[c H6y trinh bdy thi nghiQm ve tinh h6o nu6c cua axit sunfuric ] axit 2) irong giO thUc hdnh ,r6n H6a_ h.Q., b*n An ldm thi nghi6m dd bAt cAn d0 An sunfuric dac d6 vdo tay Trong tinh hu6ng nay, em hdy n6u c6ch xu' ly d6 giirp ban kh6ng bi b6ng nang l6; H = l) (Cho biit: Na=23; AI=27; Fe =56; Cu: 64; Ag:108; S:32; Cl = 35,5; C=72; O = (Gidm th! xem thi kh6ng gidi thfch gi thAm) - HET - Hg vd ftn thf sinh: , , .!." ' ' '.,.' ' '.'."' Sa ndo dsnh: