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81 solutions

Reaction Mechanism

Q. When a solution of NaSH in water is acidified, H2S is produced. Complete the following equation and track the flow of electrons via curved arrows. Choose the mechanism below which shows the correct flow of electrons via curved arrows.

Solved • Oct 15, 2019

Reaction Mechanism

Q. The experimentally determined rate law for the reaction (CH3)3CBr + OH^- → (CH3)3COH + Br^- is rate = k [(CH3)3CBr]. A postulated mechanism is (CH3)3CBr → (CH3)3C^+ + Br^- (1) (CH3)3C^+ + OH^- → (CH3)3COH (2) What reaction represents the rate determining step?

Solved • Oct 23, 2019

Reaction Mechanism

Q. The catalytic destruction of ozone occurs via a two-step mechanism, where X can be any of several species: (1) X + O3 → XO + O2 [slow] (2) XO + O → X + O2 [fast] (d) High-flying aircraft release NO into the stratosphere, which catalyzes this process. When O3 and NO concentrations are 8 x 10^12 molecule/cm^3 and 8.4 x 10^9 molecule/cm^3, respectively, what is the rate of O3 depletion? The rate constant k for the rate-determining step is 6 x 10^-15 (cm^3)^2/molecule.s. Give your answer in scientific notation. Use one significant figure in your answer.

Solved • Oct 10, 2019

Reaction Mechanism

Q. Consider the following mecahnism: (1) ClO^-(aq) + H2O(l) ⇌ HClO(aq) + OH^-(aq) [fast] (2) I^-(aq) + HClO(aq) → HIO(aq) + Cl^-(aq) [slow] (3) OH^-(aq) + HIO(aq) → H2O(l) + IO^-(aq) [fast] (b) Identify the intermediate(s), if any. Select the single best answer.

Solved • Oct 10, 2019

Reaction Mechanism

Q. Consider the following mecahnism: (1) ClO^-(aq) + H2O(l) ⇌ HClO(aq) + OH^-(aq) [fast] (2) I^-(aq) + HClO(aq) → HIO(aq) + Cl^-(aq) [slow] (3) OH^-(aq) + HIO(aq) → H2O(l) + IO^-(aq) [fast] (a) What is the overall equation? Select the single best answer.

Solved • Oct 10, 2019

Reaction Mechanism

Q. Consider the following mechanism for the oxidation of carbon monoxide: 2NO2(g) → NO3(g) + NO(g) (1) NO3(g) + CO(g) → NO2(g) + CO2(g) (2) Write the chemical equation of the overall reaction. Are there any intermediates in this mechanism? If there are intermediates, write down their chemical formulas.

Solved • Oct 5, 2019

Reaction Mechanism

Q. Identify the molecularity of each elementary reaction in the table below. elementary reaction: a. H2(g) + 2NO(g) → N2O(g) + H2O(g) b. N2O(g) → N2(g) + O(g) c. O3(g) + O(g) → 2O2(g) molecularity: unimolecular, termolecular, bimolecular, quadrimolecular, cannot be determined

Solved • Oct 5, 2019