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83 solutions

Reaction Mechanism

Q. Consider the reaction 2NO2(g) + F2(g) ⇌ 2NO2F(g) A proposed mechanism for this reaction is NO2 + F2 ⇌ NO2F + F (slow) NO2 + F ⇌ NO2F (fast) What is the rate law for this mechanism?

Solved • Dec 4, 2019

Reaction Mechanism

Q. This mechanism has been proposed for the formation of ethylbenzene: 1: CH3Ch2Br + AlBr3 → AlBr4- + CH3CH2+ 2: CH3CH2+ + C6H6 → C6H6CH2CH3+ 3: C6H6CH2CH3+ + AlB4- → AlBr3 + HBr + C6H5CH2CH3 Which substance serves as the catalyst?

Solved • Dec 4, 2019

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