Metals often form several cations with different charges.Cerium, for example, forms Ce³+ and Ce4+ ions, andthallium forms Tl* and TI³+ ions. Cerium and thalliumions react as follows:2Ce4+ (aq) + TI+ (aq)→2CE³+ (aq)+ T1³+ (aq)This reaction is very slow and is thought to occur in asingle elementary step. The reaction is catalyzed by theaddition of Mn2+(aq) according to the followingmechanism:Ce+ (aq) + Mn²+ (aq) → Ce³+(aq) + Mn3+ (aq)Cet+ (aq) + Mn³+(aq) → Ce³+(aq) + Mn+ (aq)Mn4+ (aq) + TI+(aq)→ Mn²+(aq) + T1³+ (aq) What is the rate law for the uncatalyzed reaction?• View Available Hint(s)rate = k[Ce+]O rate = k[Ce*+][TI+j?O rate = k[Ce+]² [TI+]²rate = k[TI*]O rate = k[Ce*+][TI*]O rate = k[Ce+j°[TI*]

Rate law :- The dependency of rate of a chemical reaction on concentration of the reactants is…

Answered: Metals often form several cations with…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter14: Chemical Kinetics: The Rates Of Chemical Reactions

Section: Chapter Questions

Problem 91SCQ

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In the presence of excess thiocyanate ion, SCN-, the following reaction is first order in chromium(III) ion, Cr3+ Cr3+(aq) + SCN(aq) → Cr(SCN)2+(aq) The rate constant for the reaction is (3.10x10^0)x10-6/s. What is the half-life, in seconds, for the reaction? Express yoyr answer to three significant figures.
In the presence of excess thiocyanate ion, SCN-, the following reaction is first order in chromium(III) ion, Cr3+ Cr3+(aq) + SCN(aq) → Cr(SCN)2+(aq) The rate constant for the reaction is 2.0x10-6/s. How many hours would it take for the concentration of Cr3+ to decrease to 12.5% of its initial concentration? Express your answer to one decimal place.
The reaction rate for the decomposition of N2O5 to form NO2 and O2 was studied as a function of temperature. The first order reaction rate constants were found to be: T (K) k(s*) ... 273 7.9 x 107 298 3.5 x 105 308 1.4 x 104 318 5.0 x 104 328 1.5 x 10 3 338 4.9 x 103 What is the Ea for this reaction in kJ/mol? Use Excel to plot the pertinent data and use linear regression to calculate the slope of the line connecting your data.
The iodate ion is reduced by sulfite according to the followingreaction:IO3-(aq) + 3 SO32-(aq) -----> I-(aq) + 3 SO42-(aq)The rate of this reaction is found to be first order in IO3-,first order in SO32-, and first order in H+.(a) Write the rate law for the reaction.(b) By what factor will the rate of the reaction change ifthe pH is lowered from 5.00 to 3.50? Does the reactionproceed more quickly or more slowly at the lower pH?(c) Explain how the reaction can be pH-dependent even thoughH+ does not appear in the overall reaction.
For the reaction of the ammonium ion with nitrous acid, the net reaction is NH4*(aq) + HNO2(aq) → N2(g) + 2H2O() + H*(aq) If the initial concentration of nitrous acid is 1.00 M and, after 28.8 s has elapsed, the concentration of nitrous acid has fallen to 0.82 M, what is the average rate of the reaction over this time interval? 0.0063 M/s 0.028 M/s -0.0063 M/s -0.028 M/s O 0.063 M/s
Upon dissolving InCl(s) in HCl, In+(aq) undergoes a disproportionation reaction according to the following unbalanced equation: In+(aq) = In(s) + In3+(aq) This disproportionation follows first-order kinetics with a half-life of 667 s. What is the concentration of In+(aq) after 1.35 h if the initial solution of In+(aq) was prepared by dissolving 2.38g InCl(s) in dilute HCl to make 5.0x10^2 mL of solution? What mass of In(s) is formed after 1.35 h?
Consider the following balanced equation: Cl 2(g) + 2 Br (aq) → Br 2(aq) + 2 CI (aq) [CI 2] [Br ] Rate (M/s) 1.0.509 0.382 0.01544 2.0.613 0.382 0.02239 3.0.485 0.436 0.01600 What is the order with respect to chlorine gas? O -1 O 1/2 O 1 O 3/2 O 2 O 3 O 4 cannot be determined
63Ni decays by a first-order process via the emission of a beta particle. The 63NI isotope has a half-life of 100. years. How long will it take for 67% of the nickel to undergo decay? 58 years 0.77 years 69 years 25 years O 160 years
Thiosulfate ions are oxidized by iodine according to the reaction below:2 S2O 33- (aq) + I2 (aq) → S 4O 62- (aq) + 2I -(aq)If 0.0080 mol of S2 O32- is consumed in 1.0 L of solution every second, what isconsumption rate of iodine?
Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5,730 years. Vegetation absorbs carbon dioxide through the atmosphere, and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon, and the amount of 14C present begins to decrease through radioactive decay. Therefore, the level of radioactivity must also decay exponentially. Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has a longer half-life (in this case, approximately 1.25 billion years). Suppose the minimum detectable mass is 0.4% and a dinosaur is dated with 40K to be 67 million years old. Is such a dating possible? What is the maximum age (in millions of years) of a fossil that could be dated using 40K? (Round your answer to one decimal place.) (Can you…
Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5,730 years. Vegetation absorbs carbon dioxide through the atmosphere, and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon, and the amount of 14C present begins to decrease through radioactive decay. Therefore, the level of radioactivity must also decay exponentially. Dinosaur fossils are too old to be reliably dated using carbon-14. Suppose we had a 66 million year old dinosaur fossil. What percent of the living dinosaur's 14C would be remaining today? (Round your answer to five decimal places.) 0.0000007537 X % Suppose the minimum detectable amount is 0.2%. What is the maximum age (in years) of a fossil that we could date using 14C? (Round your answer to the nearest year.) yr
Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5,730 years. Vegetation absorbs carbon dioxide through the atmosphere, and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon, and the amount of 14C present begins to decrease through radioactive decay. Therefore, the level of radioactivity must also decay exponentially. a) Dinosaur fossils are too old to be reliably dated using carbon-14. Suppose we had a 67 million year old dinosaur fossil. What percent of the living dinosaur's 14C would be remaining today? (Round your answer to five decimal places.) b) Suppose the minimum detectable amount is 0.7%. What is the maximum age (in years) of a fossil that we could date using 14C? (Round your answer to the nearest year.)

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