Kinetics
If a different step other than the first is the slow step, it's needed to _____ all the reactants up to the slowest step and cancel out any ___________ to determine the rate of the reaction.
Subtract, catalysts
Subtract, intermediates
Add, intermediates
Add, catalysts
Comprising two elementary reactions, one being endothermic and the second exothermic, how might the overall ΔH sign differ depending on whether these occur consecutively versus simultaneously?
The overall ΔH tends towards negativity, averaging the opposing heats between the steps.
The overall ΔH always ends up exactly neutralizing because the energies are exact opposites.
The overall ΔH always results in a positive sum since the first step absorbs and the second step emits, canceling out for a net gain.
Overall ΔH may either be positive or negative based on the comparative magnitudes of each step's individual ΔH, irrespective of whether they occur sequentially or simultaneously.
The following mechanism is executed: (Step 1: H2O2 + I^- → IO^- + H2O) (Step 2: H2O2 + IO^- → H2O + O2 + I^-). Which statement is true about the overall reaction and rate law?
Overall Reaction: H2O2 → H2O + O2 + I^-, Rate Law: (elementary step 2) rate = k[H2O2]^2[IO^-]
Overall Reaction: 2H2O2 → 2H2O + O2, Rate Law: (elementary step 1) rate = k[H2O2][I^-]
Overall Reaction: 2H2O2 + I^- → 2H2O + O2 + I^-, Rate Law: (elementary step 2) rate = k[H2O2][IO^-]
Overall Reaction: 2H2O2 → 2H2O + O2, Rate Law: (elementary step 1) rate = k[H2O2]^2
Which real-world process is an example of a reaction mechanism involving an elementary step?
The rusting of iron over several years.
The synthesis of ammonia in the Haber process.
The melting of ice on a warm day.
The dissolution of sugar in water.
What kind of reaction involves three colliding particles, even though it is rare?
Unimolecular
Termolecular
Trimolecular
Bimolecular
Which of the following definitions are correct for an intermediate? (A) Species that are not reactants nor products, (B) formed during the reaction and are consumed by it
A only
B only
Neither A or B
A and B
Which of the following are examples of elementary reactions?
Ionization of gas
Decomposition of ozone
Reaction of hydrogen and oxygen to form water
All of the above

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A solution's solubility is often influenced by different types of intermolecular interactions; considering this effect, what might you infer about a solute that shows increased solubility when dissolved in polar solvents compared to nonpola...
The solute likely contains polar or charged functional groups capable of strong dipole-dipole or ion-dipole interactions
It indicates that solute-solute interactions overcome solvent-solvent and solvent-solute interaction strengths
The increased solubility implies a large molar mass leading primarily to enhanced London dispersion force-based dissolution
It suggests that the molecule exhibits significant pi-pi stacking interactions favoring nonpolar environments
The _________________ of the reaction determines the reaction rate.
Fastest step
First step
Slowest step
Last step
Which term describes a reaction that occurs in a single step with one transition state?
Rate-determining step
Catalysis
Elementary reaction
Reaction intermediate