*Explain each question on how you got the answers*/Question 1 (1 point)The chemical reaction CaCO3 –> CaO CO2 is classified as aQuestion 1 options:single-replacement reactiondecomposition reactionsynthesis reactioQuestion 2 (1 point)What is the complete ionic equation for the reaction between iron(III) bromide and barium hydroxide?Question 2 options:2 FeBr3(aq) 3Ba(OH)2(aq) ? 2Fe(OH)3(s) 3BaBr2(aq)2 FeBr3(aq) 3Ba(OH)2(aq) ? 2Fe(OH)3(aq) 3BaBr2(s)2 FeBr3(aq) 3Ba(OH)2(aq) ? 2Fe(OH)3(aq) 3BaBr2(aq)SaveQuestion 3 (1 point)What is the correct name for the precipitate formed when mixing potassium carbonate and nickel(II) chloride?Question 3 options:potassium chloridenickel(III) carbonatenickel(II) carbonateSaveQuestion 4 (1 point)What is the oxidation number of Cr in a dichromate anion?Question 4 options: 2 3 6SaveQuestion 5 (1 point)When the equation below is balanced H2O2(aq) H (aq) Fe2 (aq) ? H2O(l) Fe3 (aq)The coefficient for Fe2 isQuestion 5 options:4231SaveQuestion 6 (1 point)What is the net ionic equation for the reaction between CoCl2 and an alkali hydroxide?Question 6 options:Co2 (aq) 2OH-(aq) ? Co(OH)2(s)Co3 (aq) 3OH-(aq) –> Co(OH)3(s)Na (aq) Cl-(aq) –> NaCl(s)SaveQuestion 7 (1 point)Write the net ionic equation for a reaction between lead(II) sulfate and sodium iodide.Question 7 options:Pb2 (aq) 2I-(aq) –> PbI2(s)PbSO4(aq) 2NaI(aq) –> PbI2(s) Na2SO4(aq)Na (aq) SO42-(aq) –> Na2SO4(s)SaveQuestion 8 (1 point)When a salt is dissolved in water it is represented by the following notation in a chemical reaction?Question 8 options:(l)(s)(aq)SaveQuestion 9 (1 point)What is the correct name for the precipitate formed when mixing potassium carbonate and nickel(II) chloride?Question 9 options:potassium chloridenickel(II) carbonatenickel(III) carbonateSaveQuestion 10 (1 point)Which of the following is an acid-base reaction?Question 10 options:Pb(NO3)2(aq) 2KI(aq) à PbI2(s) 2KNO3(aq)HClO4(aq) NaOH(aq) –> NaClO4(aq) H2O(l)Mg(s) 2HCl(aq) –> MgCl2(aq) H2(g)SaveQuestion 11 (1 point)Which is the reducing agent in the combustion of methanol?Question 11 options:CH3OHO2CO2SaveQuestion 12 (1 point)When the equation below is balanced H2O2(aq) H (aq) Fe2 (aq) ? H2O(l) Fe3 (aq)The coefficients for H isQuestion 12 options:3124SaveQuestion 13 (1 point)Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling?Question 13 options:CH3CH2CH3O2CO2SaveQuestion 14 (1 point)Write a balanced reaction for the neutralization of HBr upon the addition of KOH.Question 14 options:HBr(aq) KOH(aq) –> KBr(aq) H2O(l)HBr(aq) KOH(aq) à KBr(s) H2O(l)HBr(aq) KOH(aq) à KBr(l) H2O(l)SaveQuestion 15 (1 point)Which of the following is a precipitation reaction?Question 15 options:Ca(s) 2HCl(aq) –> CaCl2(aq) H2(g)2NaOH(aq) MgCl2(aq) –> 2 NaCl(aq) Mg(OH)2(s)H2SO4(aq) 2NaOH(aq) –> Na2SO4(aq) 2H2O(l)SaveQuestion 16 (1 point)Which is the oxidizing agent in the combustion of methanol?Question 16 options:CH3OHO2CO2SaveQuestion 17 (1 point)What precipitate forms when mixing silver(I) nitrate and sodium chloride?Question 17 options:no precipitate formssodium nitratesilver(I) chlorideSaveQuestion 18 (1 point)What precipitate forms when mixing copper(II) sulfate and sodium sulfate?Question 18 options:copper(III) sulfatecopper(I) sulfateno precipitate formsSaveQuestion 19 (1 point)What is the oxidation number of Mn in a permanganate anion?Question 19 options: 7 2 4SaveQuestion 20 (1 point)Which of the following is a redox reaction?Question 20 options:ZnSO4(aq) Hg2(NO3)2(aq) –> Hg2SO4(s) Zn(NO3)2(aq)Zn(s) 2 HCl(aq) –> ZnCl2(aq) H2(g)HNO3(aq) KOH(aq) –> KNO3(aq) H2O(l)SaveQuestion 21 (1 point)Propane is used as a fuel source on many barbeque grills. What is undergoing oxidation during the burning of propane while grilling?Question 21 options:CO2CH3CH2CH3O2SaveSave All Responses
