THAN TQC LUYEN DE THPT QUOC GIA 2016 M6N 111HOC ÿ Sr » vr t i LUC TRAN Chii bien CHU THI HANH THAN TDC LUYEN DE THPT QUOC GIA 2016 ides inhoc u 20 DE THEN CHOT DEDAT DIEM CAO LUYEN TAP • • « * Bam sat de thi dai hoc 2016, c£u true de cua Bo Gi£o DucBaoTao ÿ De dang on tap thong qua Ibi gicii chi tiet dude nhan xet va binh luan ÿ Nang cao t a vdi nhieu cong thite, meo thuc tien thong qua Ibi giai chi tiet NHA XUAT BAN DAI HOC QUOC GIA HA NOl THAY LCfl NOB DAU MEGABOOK MUON CAC EM HIEU DlTtfC GlA TRI CUA VIEC TIT HOC HOC dAnh THITC tiem nAng ban TIT • ÿ » Chao cac em hoc sinh than men Megabook ddi bo sach nhOng bo sach co tinh til hpc, til on tap cao, nham muc dfch giup cdc em nang cao kha nang til hoc vh dac biet phat trien tit cua minh ve mon hoc Megabook hieu diidc viec phat trien til duy, tri tue ngu'di de tao nen sil cong nhit Bill Gates, Steve Job hay Mark Zuckerberg la nhd 80% dila vao viec til hoc, til nghien cdu den say me chil khong phai la ngoi tren ghe nha trildng, nghe giao huan Viec til hoc khong han thong qua sach vd, ma thong qua sil quan sat cuoc song xung quanh, qua internet, hay dcin gian la hoc hoi kinh nghiem cua ngtfcri di trifdc Viec til hoc se giup cac em phdt huy tiem nang cua ban than, nhan thay nhflng kha nang, sd triidng cua chinh minh c6n dang an giau dau tiem thiic ma cac em chiia nhan Viec til hoc giup cac em tang kha nang tif duy, xif ly cac van de nhanh nhay, thich nghi va dap ilng tot hdn vdi si1thay doi cua moi tritdng va xa hoi Viec til hoc xay dilng bÿn nang sinh t6n, phÿn xa t6t hon cho moi ngitdi Sinh d tren ddi moi dila tre da biet til Jiqc hoi nhu' vi£c quan sat, nhin moi vat xung quanh, nghe nhieu va roi biet n6i Viec til hoc that rat til nhien, d&i trildng la mot phufcrng phap giup kich thich si! til hoc Va thay co chi c6 the hUdng dan va tao cam hilng chil khong the day chung ta moi thil Tom lai vifc til hoc se giup moi ngildi dot pha sil nghiep va cuoc song M Nang cao kha nang tiiduy, x\i ly van de nhanh Bi£t tii hoc => Tang kha nang thich nghi, phan xa nhanh vdi moi triidng Biet tii hoc => Tao nhilng thien tai giup dat nildc va nhan loai Biet tii hoc => Giup moi ngiicfi cong cuoc song, dot pha sli nghiep Biet tii hoc => Tao xa hoi v cong thiic cua X: H2NCH2COOH (C2H502N) Mx = Cong thiic M: C6H„04N3, Q: C8HK05N, Sau phin ting thuy phan: nM = 0,945 - 0,005 mol 189 = 0'035 m0l> = °'05 mDl "dipeptit = => Neu phan ting thuy phan hoan toan thi £ nx = 3nM + 2ndjpeptjt + nx= 0,135 mol => % = 3nMbandgu + 4nQband.u = 0,135 mol ma mK = 189nMban(Hu+ 246nQbanflju = 8,389 gam d&u /% Uqbandau = Mband3u * -1•1 -> X, Y, Z, T la cac peptit deu dope tao bdi cac anpha-amino axit no chtia mpt nhom -NH2 va nhom -COOH va co tong so nguyen tti oxi la 12 Dot chay 13,98 gam hon hop E chtia X, Y, Z, T can dung 14,112 lit 02 (dktc) thu dope C02, va N2 Mat khac dun n6ng 0,135 mol hon hop E bang dung dich NaOH (lay 20% so vPi phan ting), co can dung dich sau pMn ting thu dope lOpng ran khan la H20 A 31,5 gam B 24,51 gam C 36,05 gam D 25,84 gam Giai: Dap an A Tong so nguyen tti O cua X, Y, Z, T la 12 => Tong so don vi a - amino axit tao cac peptit =12-4 = => X, Y, Z, T deu la dipeptit Quy doi hon hpp peptit X, Y, Z, T tu'dng ting vPi peptit tao bPi don vi CnH2n + 3N02, peptit c6 CTTQ = 2CnH2n+1NQ2 - H2Q = C2 H4nN203 I :v " Jlli&fefp foook / ÿ *" : ÿ - Dan Dor XuHudng SachLuyen Thi - 'ÿ ;- » Y (0,96 mol H+,0,2 mol NO3 ,0,12 mo! Fe3ÿ) + Fe Fe + 4H+ + NO; -> Fe3+ + NO + 2H20 0,2 mol 0,2 0,80,2 Fe + 2Fe3+ —» 3Fe2+ 0,16 K = ~~ [HCOOH] Dp dien ly ct = 10~1,97 0,6554 10 _ = io-3-75 -1,97.2 [HCOO~]JH+] (0,6554-10~1,97) 100% = 1,635% Them V lit H O vio 1lit dung dich tren: C°ICOOH = 65541 m 1+ V Do dien ly axit tang lan => a ' = 4a = 6,54% (HCOO"] iinÿ.