Consider the following reaction between mercury() chloride and Oxalate lon 2HgCh (aq) + CO (aq)-2C1 (aq) + 2CO(g) + HCl(a) The initial rate of this reaction was determined for several concentrations of HgCl₂ and C₁0 obtained for the rate of disappearance of C₂0: and the following rate data were Experiment HgCl (M) CO (M) Rate (M/s) 0.164 0.15 3.2 x 10 0.164 0.45 0.082 0246 1 2 3 4 0.45 0.15 2.9 x 10 1.4 x 104 4.8 x 10- Part B What is the value of the rate constant with proper units? Express your answer using two significant figures. k=8.7×10 M¹ But Previous Answers ✓ Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations Part C What is the reaction rate when the concentration of HgCl, is 0.130 M and that of C,00.40 M. temperature is the same as that used to obtain the data shown? Express your answer using two significant figures. VAX rate Submit Request Answer ? . M/s

Consider the following reaction between mercury() chloride and Oxalate lon 2HgCh (aq) + CO (aq)-2C1 (aq) + 2CO(g) + HCl(a) The initial rate of this reaction was determined for several concentrations of HgCl₂ and C₁0 obtained for the rate of disappearance of C₂0: and the following rate data were Experiment HgCl (M) CO (M) Rate (M/s) 0.164 0.15 3.2 x 10 0.164 0.45 0.082 0246 1 2 3 4 0.45 0.15 2.9 x 10 1.4 x 104 4.8 x 10- Part B What is the value of the rate constant with proper units? Express your answer using two significant figures. k=8.7×10 M¹ But Previous Answers ✓ Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations Part C What is the reaction rate when the concentration of HgCl, is 0.130 M and that of C,00.40 M. temperature is the same as that used to obtain the data shown? Express your answer using two significant figures. VAX rate Submit Request Answer ? . M/s

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section: Chapter Questions

Problem 95QRT: Nitryl fluoride is an explosive compound that can be made by oxidizing nitrogen dioxide with...

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One possible mechanism for the decomposition of nitryl chloride, NO2CI, is What is the overall reaction? What rate law would be derived from this mechanism? What effect does increasing the concentration of the product NO2 have on the reaction rate?
Express the rate of the reaction 2N2O(g)2N2(g)+O2(g) in terms of (b) [ N2O ] (a) [ O2 ]
The hydrolysis of the sugar sucrose to the sugars glucose and fructose, C12H22O11+H2OC6H12O6+C6H12O6 follows a first-order rate equation for the disappearance of sucrose: Rate =k[C12H22O11] (The products of the reaction, glucose and fructose, have the same molecular formulas but differ in the arrangement of the atoms in their molecules.) (a) In neutral solution, k=2.11011s1 at 27 C and 8.51011s1 at 37 C. Determine the activation energy, the frequency factor, and the rate constant for this equation at 47 C (assuming the kinetics remain consistent with the Arrhenius equation at this temperature). (b) When a solution of sucrose with an initial concentration of 0.150 M reaches equilibrium, the concentration of sucrose is 1.65107M . How long will it take the solution to reach equilibrium at 27 C in the absence of a catalyst? Because the concentration of sucrose at equilibrium is so low, assume that the reaction is irreversible. (c) Why does assuming that the reaction is irreversible simplify the calculation in pan (b)?
Define stability from both a kinetic and thermodynamic perspective. Give examples to show the differences in these concepts.
What is the difference between average rate, initial rate, and instantaneous rate?
A drug decomposes in the blood by a first-order process. A pill containing 0.500 g of the active ingredient reaches its maximum concentration of 2.5 mg/ 100 mL of blood. If the half-life of the active ingredient is 75 min, what is its concentration in the blood 2.0 h after the maximum concentration has been reached?
11.41 For a drug to be effective in treating an illness, its levels in the bloodstream must be maintained for a period of time. One way to measure the level of a drug in the body is to measure its rate of appearance in the urine. The rate of excretion of penicillin is first order, with a half-life of about 30 min. If a person receives an injection of 25 mg of penicillin at t = 0, how much penicillin remains in the body after 3 hours?
For the reaction A + B C, explain at least two ways in which the rate law could be zero order in chemical A.
For the reaction A+BC, explain at least two ways in which the rate law could be zero order in chemical A.
Nitryl fluoride is an explosive compound that can be made by oxidizing nitrogen dioxide with fluorine: 2 NO2(g) + F2(g) → 2 NO2F(g) Several kinetics experiments, all done at the same temperature and involving formation of nitryl fluoride, are summarized in this table: Write the rate law for the reaction. Determine what the order of the reaction is with respect to each reactant and each product. Calculate the rate constant k and express it in appropriate units.
11.64 HBr is oxidized in the following reaction: 4 HBr(g) + O2(g) —• 2 H2O(g) + 2 Br,(g) A proposed mechanism is HBr + O2 -* HOOBr (slow) HOOBr + HBr — 2 HOBr (fast) HOBr + HBr — H2O + Bn (fast) Show that this mechanism can account for the correct stoichiometry. Identify all intermediates in this mechanism. What is the molecularity of each elementary’ step? Write the rate expression for each elementary' step. Identify the rate-determining step.
The rate of the decomposition of hydrogen peroxide, H2O2, depends on the concentration of iodide ion present. The rate of decomposition was measured at constant temperature and pressure for various concentrations of H2O2and of KI. The data appear below. Determine the order of reaction for each substance, write the rate law, and evaluate the rate constant. Rate [H2OJ [Kll (mL min-’) (mol L ’) (mol L ’) 0.090 0.15 0.033 0.178 0.30 0.033 0.184 0.15 0.066