Chem Test Solutions 100% Verified Solutions

CHEM TEST SOLUTIONS 100% VERIFIED SOLUTIONS Which of the following ionic compounds is insoluble in water? -NaCl - CaCl2 -FeCl3 -BaCl2 - PbCl2 - ANSWER PbCl2 The equation 2Al(s) + 3Br2(l) → 2AlBr3(s) is a(n) ______________ reaction. -oxidation-reduction and synthesis -oxidation-reduction only -synthesis only - decomposition - combustion - ANSWER oxidation-reduction and synthesis An aqueous solution of ammonium carbonate is allowed to react with an aqueous solution of magnesium chloride. The net ionic equation contains which of the following species (when balanced in standard form)? -CO32-(aq) - 2NH4+(aq) -2Mg2+(aq) -Cl-(aq) -2Cl-(aq) - ANSWER CO32- Which of the following ionic compounds is insoluble in water? Na2SO4 CuSO4 Fe2(SO4)3 FeSO4 BaSO4 - ANSWER BaSO4 When the following equation is balanced in standard form, what is the coefficient in front of the H2O? C8H18(g) + O2(g) CO2(g) + H2O(g) 18 8 16 1 25 - ANSWER 18 How many electrons are transferred in the following oxidation-reduction reaction? Zn(s) + 2AgNO3(aq) → Zn(NO3)2(aq) + 2Ag(s) 1 2 3 4 5 - ANSWER 2 A substance that, when dissolved in water, produces a solution that conducts electric current very efficiently is called a strong electrolyte a weak electrolyte a strong ion an electrical solute none of these - ANSWER a strong electrolyte Which of the following will not be spectator ions in the reaction in aqueous solution of lead(II) nitrate and potassium chloride? Pb2+ and ClK+ and ClPb2+, K+, Cl-, and NO3- Pb2+ and NO3- K+ and NO3- - ANSWER Pb2+ & ClThe scientist who discovered the essential nature of acids through solution conductivity studies is Priestley Boyle Einstein Mendeleev Arrhenius - ANSWER Arrhenius Which of the following ionic compounds is soluble in water? (NH4)3PO4 Mg3(PO4)2 Ca3(PO4)2 AlPO4 Cu3PO4 - ANSWER (NH4)3PO4 An aqueous solution of potassium chloride is mixed with an aqueous solution of sodium nitrate. The molecular equation co