Answer Q19, 20, 21 What is the pti of 01 mol dm 'sulphuricCH,COOH > CH,CH,011 > CH,COCH, can beaccounted for principally by20acid(A)2.0 (B) 01 (C) 10(A)(B)(C)(D)15A decrease in van-der Waal's forces(D) 0.7Strong covalent bondsDipole-dipole interactionsA decrease in hydrogen bondingGiven the following ionic radii innanometers (nm): Cl-0.180: Br-0 195, 1-0.215:Ag'=0.065; Na'-0.102. Which pair of ions willform an ionic compound with the highest covalentLiquid water "molecules ionisesfollows H,0(a) Hag) + OHag)expression for ionic product of water isas21The(A)kw(B)kw = [H ][OH ]%3D(C)kw = [H,0][OH|character?(D)kw = [H*][OH |(A)(C)Ag' and CI (B)Ag' and IWhich is the most polar molecule of theNa" and CIThe conjugate acid of ethylamine from theequation:CH,CH,NH, + HClan) CH,CH,NI + C(D) Na' and Br2216following:CH.Br(A)(C) CH CICHICHWlhich of the followmg represent the dot- (BCH,CH,NHand cross diagram of the ilowng hydrogen (OCH,CH,NIH(B)(D)(A)CH,CH, NH,17carbonate ion, HCO;(D)CH,CH,NH CI23The titration curve ef aqueous 1HeversISaqueous ammonia is shown belowHO: C: i C:H C.HO C:18Irom the pair of liquid behs thonse the15volume uf tcul adiledpair that would likeiy forman ideal selon(A)(B)(C)(D)1920CHI6 and CHCI,CHCI and CoHi4There is only a small change in pll with theaddition of the strong acid in the zone XY becauseCiH16 and CaHisCHSCI and CH,OHRaoult's law applied to ideal solutions An(A.) XY is the buffer zone(B.) It is the titration of a strong acid and a weakideal solution would have one of the followingcharacteristics:base(C.) The indicator used is not appropriate(A).standard conditions.Mixes completely with any liquid under(D.) The end point had been attained(B)volume or heat change on mixing the componentsQuestion 24-26. Given the following diagram ofa cellComponents have similar bonds, noThe tntal vanour preceure nf the mixnraWIII De nigner than predicted by Raouit s taw(D)be lower than that predicted by Raoult's lawTotal vapour pressure of the mixture will

Raoult's law is used to calculate partial vapor of the solvent in the mixture. It can be calculated…

What is the pti of 0. 1 mol dm 'sulphuric CH,COOH > CH,CH,011 > CH,COCH, can be 20 accounted for principally by (A) (B) (C) (D) 15 acid 20 (B) 01 (C) 10 (D) 0.7 Liquid water "molecules ionises as (A) A decrease in van-der Waal's forces Strong covalent bonds Dipole-dipole interactions A decrease in hydrogen bonding 21 The follows H,0a) Hag) + OHag) Given the following ionic radii in nanometers (nm): CI-0.180: Br-0 195, 1-0.21IS: Ag'-0.065; Na'-0.102. Which pair of ions will form an ionic compound with the highest covalent character? expression for ionic product of water is (A) kw (B) (C) (D) kw = kw = [H,0][OH"| kw = (11'][OH | al -HO]l-H) (A) Ag' and CI (B) Na' and CI (D) Na' and Br The conjugate acid of ethylamine from the 22 Ag' and I 16 Which is the most polar molecule of the following: (A) CHBr (C) CHCI 17 Which of the followng represent the dot- (B)CH,CH,NII, (C) oquation: CH,CH,NH, + HClian) CH,CH, NII + C 2) (B) CHI (D) CHI (A)CH,CH, NH, and-cross diagram of the following hydrogen ()CH,CH,NII carbonate ion, Hco; (D)CH,CH,NH cr- 23 The titration curve of Iqucous eT verss HO: C: He C: aqueous ammonia is shown below HO C: Irom the pair of liguid bet chose the mir that would likeiy torm an ideal emon 18 10 volume of acul adided 15 CHie and CHC, CHCI and CaHa (A) (B) (C) CaH, and CaHis (D) CHCI and CH,OH 19 Raoult's law applied to ideal solutions An ideal solution would have one of the followving characteristics: There is only a small change in pH with the addition of the strong acid in the zone XY because (A.) XY is the buffer zone (B.) It is the titration of a strong acid and a weak base (C.) The indicator used is not appropriate (D.) The end point had been attained Question 24-26. Given the following diagram of (A) standard conditions. Mixes compietely with any liquid under (B) Components have similar bonds, no volume or heat change on mixing the components The total vapour preecure of the mivnir a cell WiI be nigner than predictea ny Raouit law Total vapour pressure of the mixture will be lower than that predicted by Raoult's law (D)