1/How are the reactions involved in this investigation classified? Combination r
ID: 845014 • Letter: 1
Question
1/How are the reactions involved in this investigation classified?
Combination reactions
Decomposition reactions
Exchange reactions
Oxidation of Metals
Combustion reactions
when aqueous solutions of lead(II) nitrate and potassium iodide are mixed, what is the formula for the insoluble solid (precipitate) that forms?
KNO3(s)
PbI(s)
PbI2(s)
Pb(NO3)2(s)
PbIO3(s)
Which of the following should react with sulfuric acid, H2SO4(aq), to form an insoluble solid (a precipitate)?
KCl
Na3PO4
Mg(NO3)2
Ca(NO3)2
None of these
2/what is the driving force for the reaction of HCl(aq) and NaOH(aq)?
Formation of a precipitate
Formation of a gas
Formation of ions
Formation of H2O(l)
Formation of NaCl(aq)
3/Which ions (with correct charges) are present in an aqueous solution of ZnCl2?
Zn+ and Cl?
Zn2+ and Cl22?
Zn2+ and Cl?
Zn4+ and Cl2?
Zn and Cl2
A reaction will NOT occur when all the reactants and products in the ionic equation are spectator ions because no change occurs such as the formation of a precipitate or molecular compound. Which of the following combinations (as reactants) will NOT undergo chemical change when mixed? Refer to Appendix J if needed.
Mg(NO3)2(aq) and NaOH(aq)
HCl(aq) and NaOH(aq)
NaNO3(aq) and KI(aq)
Combination reactions
Decomposition reactions
Exchange reactions
Oxidation of Metals
Combustion reactions
when aqueous solutions of lead(II) nitrate and potassium iodide are mixed, what is the formula for the insoluble solid (precipitate) that forms?
KNO3(s)
PbI(s)
PbI2(s)
Pb(NO3)2(s)
PbIO3(s)
-
Which of the following should react with sulfuric acid, H2SO4(aq), to form an insoluble solid (a precipitate)?
KCl
Na3PO4
Mg(NO3)2
Ca(NO3)2
None of these
2/what is the driving force for the reaction of HCl(aq) and NaOH(aq)?
Formation of a precipitate
Formation of a gas
Formation of ions
Formation of H2O(l)
Formation of NaCl(aq)
3/Which ions (with correct charges) are present in an aqueous solution of ZnCl2?
Zn+ and Cl?
Zn2+ and Cl22?
Zn2+ and Cl?
Zn4+ and Cl2?
Zn and Cl2
A reaction will NOT occur when all the reactants and products in the ionic equation are spectator ions because no change occurs such as the formation of a precipitate or molecular compound. Which of the following combinations (as reactants) will NOT undergo chemical change when mixed? Refer to Appendix J if needed.
Mg(NO3)2(aq) and NaOH(aq)
HCl(aq) and NaOH(aq)
NaNO3(aq) and KI(aq)
Explanation / Answer
1) Exchange reactions
2) PbI2(s)
3) none
4) Formation of H2O(l)
5) Zn2+ and Cl?
6) HCl(aq) and NaOH(aq)
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