2. The proposed reaction mechanism is as follows:BrO₂ (aq) + H* (aq) → HBrO3 (aq)HBrO3 (aq) + H+ (aq) → H₂BrO₂+ (aq)H₂BrO3+ (aq) + Br (aq) → Br₂O₂ (aq) + H₂O (l)Br₂O₂ (aq) + 4H*(aq) + 4Br(aq) → 3Br₂ (l) + H₂O (l)Evaluate the validity of this proposed reaction. Justify your answer.i.ii.iii.iv.[Fast][Medium][Slow][Fast]

In the given question we have to predict the validity of the given reaction mechanism.The reaction…

2. The proposed reaction mechanism is as follows: BrO₂ (aq) + H* (aq) → HBrO3(aq) HBrO₂ (aq) + H* (aq) → H₂BrO₂ (aq) H₂BrO₂ (aq) + Br(aq) → Br₂O₂ (aq) + H₂O(l) Br₂O₂ (aq) + 4H*(aq) + 4Br(aq) →3Br₂ (f) + H₂O (l) Evaluate the validity of this proposed reaction. Justify your answer. i. ii. iii. iv. [Fast] [Medium] [Slow] [Fast]

2. The proposed reaction mechanism is as follows: BrO₂ (aq) + H* (aq) → HBrO3(aq) HBrO₂ (aq) + H* (aq) → H₂BrO₂ (aq) H₂BrO₂ (aq) + Br(aq) → Br₂O₂ (aq) + H₂O(l) Br₂O₂ (aq) + 4H*(aq) + 4Br(aq) →3Br₂ (f) + H₂O (l) Evaluate the validity of this proposed reaction. Justify your answer. i. ii. iii. iv. [Fast] [Medium] [Slow] [Fast]

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter7: Reaction Rates And Chemical Equilibrium

Section: Chapter Questions

Problem 7.43P: 7-43 (Chemical Connections 7A and 7B) Why is a high fever dangerous? Why is a low body temperature...

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Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?
7-43 (Chemical Connections 7A and 7B) Why is a high fever dangerous? Why is a low body temperature dangerous?
Silicon forms a series of compounds analogous to the al-kanes and having the general formula SinH2n+2. The first of these compounds is silane, SiH4, which is used in the electronics industry to produce thin ultrapure silicon films. SiH4(g) is somewhat difficult to work with because it is py-ropboric at room temperature—meaning that it bursts into flame spontaneously when exposed to air. (a) Write an equation for the combustion of SiH4(g). (The reaction is analogous to hydrocarbon combustion, and SiO2 is a solid under standard conditions. Assume the water produced will be a gas.) (b) Use the data from Appendix E to calculate ? for this reaction. (c) Calculate G and show that the reaction is spontaneous at 25°C. (d) Compare G for this reaction to the combustion of methane. (See the previous problem.) Are the reactions in these two exercises enthalpy or entropy driven? Explain.
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
3 / 3 100% + | 5. The following series of reactions show the catalyzed conversion of oxygen to ozone: ½ 0, (g) + NO (g) → NO, (g) 2 NO, (g) → NO (g) + O (g) 2 O, (g) + O (g) → 0, (g) -> a) Write the overall reaction. b) Is NO, or NO the catalyst for this reaction? Explain your answer. the following reaction:
For the reaction of the ammonium ion with nitrous acid, the net reaction is NH4+(aq) + HNO2(aq) → N2(g) + 2H2O(l) + H+(aq) If the initial concentration of nitrous acid is 1.00 M and, after 35.4 s has elapsed, the concentration of nitrous acid has fallen to 0.64 M, what is the average rate of the reaction over this time interval?
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.
Potential Energy (kJ) 1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) Cl₂ (g) + Pt (s) → 2Cl (g) + Pt(s) ΔΗ = - 950 kJ ΔΗ = 575 kJ (ii) Cl (g)+ CO (g) + Pt (s) → CICO (g) + Pt (s) (iii) Cl (g) + CICO (g) → Cl₂CO (g) AH = -825 kJ 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ 600 400 200 0 -200 -400 -600 -800 Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ Reaction Progress b. What is the overall chemical equation? c. What is the overall change in enthalpy for the above chemical reaction?
The elementary steps for a catalyzed reaction are shown below. Identify the catalyst? Identify the reactive intermediate? HyOy(0g) + I" (aq) —+ H_O(0) + IOT (sq) IO"(@a) + HyOz(0g) - HyO0+O2{0) +F(31) O The catalyst is H₂O2(aq); the reactive intermediate is 1(aq). Ob The catalyst is (aq); the reactive intermediate is 10"(aq). The catalyst is H₂O(); the reactive intermediate is 1" (aq). Od The catalyst is 1"(aq); the reactive intermediate is H₂O2(aq). The catalyst is 10(aq); the reactive intermediate is 1(aq).
но HO HO HO 0 + ½ O, → + H,0 H H но он ascorbic acid dehydroascorbic acid Vitamin C is oxidized slowly to dehydroascorbic acid by the oxygen in air. It is catalyzed by ions such as Cu*2 and Fe*3. The reaction can be followed by measuring the ultraviolet absorbance at 243 nm. Time (hours) Absorbance (A) 1/A In A - In A 0.75 1.3 -0.29 0.29 1 0,38 2.6 -0.97 0.97 2 0.19 5.3 - 1.7 1.7 3 0.095 11 - 2.4 2.4 28. A new compound is synthesized and found to be a monoprotic acid with a molar mass of 248 g/mole. When 0.0050 moles of this acid are dissolved in 0.500L of water, the pH is measured as 2.94. What is the pKa of this acid? (A) (B) (C) (D) 2.33 3.89 5.78 7.78 29. What is the hybridization of carbon 1 (far left) and carbon 2 (middle) in this hydrocarbon: CH3CH=CH2? (A) sp³, sp (B) sp?, sp? (C) sp³, sp? (D) sp, sp?
In a hypothetical reaction of 2B + C ➡ D, the order of reaction for the given equation is??
When the rate of the reversible reaction A + BSC is studied under a certain set of conditions, it is found that the rate of the forward reaction is kA]. What can be concluded about the rate law for the reverse reaction under these conditions? (A) Rate = k-[C] %3D (B) Rate = k [B] (C) The rate law of the reverse reaction cannot be determined from the information given. (D) An crror must have been made, since if the reaction is reversible, the forward rate law must be Rate = k{A][B]. %3D