2023 a level paper 1 questions and answers with 100% guaranteed success

2023 a level paper 1 questions and answers with 100% guaranteed success. This hquestion his habout hPeriod h3 helements hand htheir hoxides. Give han hequation hfor hthe hreaction hbetween hphosphorus hand han hexcess hof hoxygen. h- h h h hcorrect hanswer.P4 h+5O2 h→P4O10 Give han hequation hfor hthe hreaction hbetween hsulfur hdioxide hand hwater. h- h h h hcorrect hanswer.SO2 h+ hH2O h→ hH2SO3 Give hthe hdisplayed hformula hfor hthe hanion hformed hwhen hsulfur htrioxide hreacts hwith hwater. h- h h h hcorrect hanswer. Give han hequation hfor hthe hreaction hof hmagnesium hwith hsteam. hState hone hobservation hmade. h- h h h hcorrect hanswer.M1 hMg h+ hH2O h→ hMgO h+ hH2 M2 hWhite hsolid/white hpowder OR h(Bright) hwhite hlight/white hflame Give han hequation hto hshow hhow han hexcess hof hmagnesium hoxide hreacts hwith hphosphoric hacid h(H3PO4). h- h h h hcorrect hanswer.3MgO h+ h2H3PO4 h→ hMg3(PO4)2 h+ h3H2O The hequilibrium hmixture hin hQuestion h04.3 his hcompressed hinto ha hsmaller hvolume. hDeduce hthe heffect, hif hany, hof hthis hchange hon hthe hequilibrium hyield hof hoxygen hand hon hthe value hof hKp h- h h h hcorrect hanswer.Decrease h No hchange The hequilibrium hmixture hin hQuestion h04.3 his hallowed hto hreach hequilibrium hat ha hlower temperature. Explain hwhy hthe hequilibrium hyield hof hoxygen hdecreases. h- h h h hcorrect hanswer.M1 hReaction his hendothermic hOR hexothermic hin hbackwards hdirection M2 hEquilibrium hshifts/moves hin hbackwards hdirection/to hthe hleft hto hraise hthe htemp/oppose hthe hdecrease hin htemp Use hyour hanswer hto hQuestion h05.1 hto hdeduce hhow hthe htemperature hchanges hwhen hcalcium hchloride hdissolves hin hwater. h- h h h hcorrect hanswer.Temperature hgoes hup Explain hwhy hthe henthalpy hof hhydration hof hfluoride hions his hmore hnegative hthan hthe enthalpy hof hhydration hof hchloride hions. h- h h h hcorrect hanswer.M1 hF- hhas ha hhigher hcharge hdensity M2 hstronger hattraction h(of hfluoride hion) hto hδ+ hon hH/ helectron hdeficient hH h(in hwater) Explain hwhy hthe hsecond hionisation henergy hof hcalcium his hgreater hthan hthe hfirst hionisation henergy hof hcalcium. h- h h h hcorrect hanswer.Electron hremoved hfrom ha hpositive hcharge/ion Table h4 hshows hlattice henthalpies hbased hon ha hperfect hionic hmodel hand hlattice henthalpies hfrom hBorn-Haber hcycles hfor hthree hmetal hchlorides. h- h h h hcorrect hanswer.1a hValue hfor hCaCl2 his hlarger 1b hCa2+ hhas ha hlarger hcharge/ his ha hsmaller hion 1c hCaCl2 hhas hstronger hionic hbonds hor hstronger hattraction hbetween h+ hand h- hions h(Ca2+and hCl- h) 2a hCaCl2 hhas hsimilar hvalues h(between hthe hperfect hionic hmodel hand hBorn-Haber hcycle) 2b hKCl hhas hsimilar hvalues h(between hthe hperfect hionic hmodel hand hBorn-Haber hcycle) 2c hCaCl2 hand hKCl hhave h(almost) hperfect hionic hbonding 3a hAgCl hhas hlarger hdifference hin hvalues h(between hthe hperfect hionic hmodel hand hBorn-Haber hcycle) 3b hAgCl hcontains h(some) hcovalent hcharacter 3c hAg+ hmore hpolarising/distorts helectron hcloud hmore The hmass hof hbarium hhydroxide hfrom hQuestion h06.1 his hdissolved hin ha hbeaker hcontaining h150 hcm3 hof hdistilled hwater. 250 hcm3 hof h0.100 hmol hdm-3 hbarium hhydroxide hsolution. [1 hmark] Describe hhow hthis hsolution his hused hto hmake h250 hcm3 hof hthe h0.100 hmol hdm-3 hbarium hhydroxide hsolution. [3 hmarks] h- h h h hcorrect hanswer.M1 hTransfers hthe hsolution hto ha hvolumetric/graduated hflask M2 hAdd hwashings husing hdistilled hwater hand hmake hup hto hthe graduation hmark/250 hcm3 M3 hInvert hmany htimes h/ hshake hto hmix Before hthe hfirst htitration, hthe h25 hcm3 hpipette his hrinsed hwith ha hsmall hvolume hof hthe h0.100 hmol hdm-3 hbarium hhydroxide hsolution. State hwhy hit his hgood hpractice hto hrinse hthe hpipette hin hthis hway. h- h h h hcorrect hanswer.So hthat hthe htitration his hdone hwith hknown hconcentration hof hBa(OH)2 Hydrochloric hacid his hadded hto hthe hburette husing ha hfunnel. State hwhy hit his hgood hpractice hto hremove hthe hfunnel hfrom hthe hburette hbefore hthe htitration. h- h h h hcorrect hanswer.Drops hof hacid hcould hfall hinto hthe hburette h(so hno hlonger hknow hhow hmuch hhas hbeen hadded hfrom hburette) This hquestion his habout hcomplexes hcontaining hthe haluminium hion. Give hthe helectron hconfiguration hof hthe hAl3+ hion. h- h h h hcorrect hanswer.1s2 h2s2 h2p6 Explain hhow hthe hions hare hdetected hin hthe hTOF hmass hspectrometer