The Molecular Collisions And Influenced Discussion

The Molecular Collisions And Influenced Discussion
The Molecular Collisions And Influenced Discussion
Some over-the-counter antacids contain mineral carbonates (CaCO;,
MgCoO,) as their primary ingredient. A chemistry student wants to
optimize the efficacy of the antacid to neutralize stomach acid (HCI).
Which of the following would be expected to increase the rate at which the
mineral carbonates neutralize HCl in vitro (not in a biological system)?
(A) Increase the volume of the reaction solution.
(B) Increase the pressure on the solution.
(C) Decrease the particle size of the tablets by grinding them into a
powder.
(D) Decrease the temperature at which the reaction occurs.
Collisions between molecules of methyl isonitrile can cause a
rearrangement of atoms as follows:
H,C-N=G¢ @iHyC—CSNn
Which of the following statements is true regarding this reaction?
(A) The energy for the rearrangement is provided for by the collision
between the reactants.
(B) The reaction is bimolecular because it involves two types of molecules.
(C) Because the reactant and product contain a triple bond, the reaction
requires a multistep mechanism.
(D) Because the reactant and product contain a triple bond, the reaction
is improbable and rarely occurs.
82 > 500AP Chemistry Questions to Know by Test Day
263. Which of the following is not true regarding the determination of the rate
law for a specific reaction?
(A) The rate law can be determined by experimental data of reaction rates
* with varying concentrations of reactants at the same temperature.
(B) The rate law can be determined by experimental data of the rates of
the elementary steps of a reaction.
(C) The rate law for an elementary step in a reaction is based on its
molecularity.
(D) The rate law for equilibrium processes can be expressed using the
stoichiometric coefficients of the reactants as reactant orders.
264. A student proposes that the following reaction proceeds via a single
elementary reaction.
H, (g) Bry (g) 2 HBr
The Molecular Collisions And Influenced Discussion
The experimentally determined rate law for the reaction is rate =

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