EXAMPREP 2026 COMPLETE QUESTION
SET WITH ACCURATE ANSWERS
⩥ In which of the following sets of ionic compounds are all
members of the set insoluble in water?
[A] AgCl, PbCl2, NH4Cl
[B] CuCO3, CaCO3, MgCO3
[C] PbSO4, FeSO4, BaSO4
[D] more than one correct response
[E] no correct response. Answer: [B] CuCO3, CaCO3, MgCO3
⩥ Which of the following solutions has a particle(ion or
molecule) molarity of 4.0?
[A] 2.0 M NaCl
[B] 4.0 M glucose
[C] 1.0 M Na3PO4
[D] more than one correct response
[E] no correct response. Answer: [A] 2.0 M NaCl
[B] 4.0 M glucose
[C] 1.0 M Na3PO4
,[D] more than one correct response
⩥ The minimum combined kinetic energy reactant
particles must possess in order for their collision to
result in a reaction is called the
[A] orientation energy
[B] collision energy
[C] activation energy
[D] dissociation energy. Answer: [C] activation energy
⩥ How many of the following determine whether a reaction is
exothermic or endothermic?
[A] the activation energy
[B] how reactant and product chemical potential
energies compare
[C] whether a catalyst is present
[D] the physical state of the reactants. Answer: [B] how reactant and
product chemical potential
energies compare
⩥ Catalysts are correctly characterized by each of the
following statements except one. The exception is
, [A] they lower the activation energy for a
reaction
[B] they do not actively participate in a reaction
[C] they can be either solids, liquids or gases
[D] they are not consumed in a reaction. Answer: [B] they do not
actively participate in a reaction
⩥ For a system at chemical equilibrium
[A] forward and reverse reaction rates are equal
[B] reactant and product concentrations are zero
[C] forward and reverse reaction rates are zero
[D] reactant and product concentrations are equal. Answer: [A] forward
and reverse reaction rates are equal
⩥ Le Chatelier's principle states that
[A] only reactions in which a catalyst is present
can reach chemical equilibrium
[B] if a chemical equilibrium is disturbed, the
system will try and reestablish equilibrium
[C] only exothermic reactions can reach
chemical equilibrium
[D] if a chemical equilibrium is disturbed, the