QUESTION 1 a) Define rate of reaction. Write the expression to show the relationship between the rate of disappearance of mercury(II) chloride, HgCl2 and the rate of formation of mercury(1) chloride, Hg2Cl2. 2HgCl2 (aq) + C2042- (aq) → 2CI-(aq) + 2CO2 (g) + Hg2Cl2 (s) b) Calculate the activation energy, Ea (in J mol-1) of a reaction occurring at 679 K given that the forward reaction has a rate constant, k of 7.8 s-1 and Arrhenius constant, A of 16.3 s-1. State the effect on the Ea value when temperature is increased. The gas constant, R is 8.314 J mol-1 K-1.

QUESTION 1 a) Define rate of reaction. Write the expression to show the relationship between the rate of disappearance of mercury(II) chloride, HgCl2 and the rate of formation of mercury(1) chloride, Hg2Cl2. 2HgCl2 (aq) + C2042- (aq) → 2CI-(aq) + 2CO2 (g) + Hg2Cl2 (s) b) Calculate the activation energy, Ea (in J mol-1) of a reaction occurring at 679 K given that the forward reaction has a rate constant, k of 7.8 s-1 and Arrhenius constant, A of 16.3 s-1. State the effect on the Ea value when temperature is increased. The gas constant, R is 8.314 J mol-1 K-1.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

A sulfuric acid plant produces a considerable amount ofheat. This heat is used to generate electricity, which helpsreduce operating costs. The synthesis of H2SO4 consists ofthree main chemical processes: (a) oxidation of S to SO2,(b) oxidation of SO2 to SO3, (c) the dissolving of SO3 inH2SO4 and the subsequent reaction with water to formH2SO4. If the third process produces 130 kJ/mol, howmuch heat is produced in preparing a mole of H2SO4 froma mole of S? How much heat is produced in preparing5000 pounds of H2SO4?
Review Chemical reactions and Balancing Equations Complete and balanced the following reactions and state the type of reaction. (a) sodium + water → (b) magnesium chloride + ammonium hydroxide → (c) carbon + oxygen → (d) zinc + iron (II) sulfate → (e) sulfuric acid + calcium carbonate → (f) gold + copper (1I) chloride → (g) ammonium chloride + barium hydroxide → (h) butane + oxygen → (i) sodium sulfite + nitric acid → G) potassium carbonate → (k) beryllium chlorate → (1) magnesium + sulfuric acid > (m) lead (II) nitrate + potassium iodide → (n) sodium hydroxide + nitric acid →
The psychoactive drug methamphetamine ("speed"), which is sold as the prescription medication Desoxyn, C10H15N, under- goes a series of reactions in the body; the net result of these reac- tions is the oxidation of solid methamphetamine by oxygen gas to produce carbon dioxide gas, liquid water, and an aqueous solution of urea, CH4N₂O. Write the balanced equation for this net reaction.
A Moving to the next question prevents changes to this answer. Question 2 Calculate AH for the formation of benzoic acid from its constituent elements 7C(s) + 3H2(g) + O₂(g) → C6H5COOH(s) Given: C6H5COOH(s) + 15/2 O2(g) → 7CO2(g) + 3H₂O(l) C(s) + O2(g) - CO₂(g) H2(g) + O2(g) → H₂O(l) Attach File Browse Local Files AH = -771.2 kcal AH-94.05 kcal AH = -68.32 kcal Moving to the next question prevents changes to this answer. (2) (3)
Write and balance the reaction for the complete combustion of nonyne, C9H16.
Only (b)
Researchers isolated an unknown substance, X, from rabbit muscle. They determined its structure from the following observations and experiments. (a) Qualitative analysis showed that X was composed entirely of C, H, and O. A weighed sample of X was completely oxidized, and the H2O and CO2 produced were measured. This quantitative analysis revealed that X contained 40.00% C, 6.71% H, and 53.29% O by weight. (b) The molecular mass of X, as determined by mass spectrometry, was 90.00 atomic mass units (u). (c) Infrared spectroscopy showed that X contained one double bond. (d) X dissolved readily in water, and the solution demonstrated optical activity when tested in a polarimeter. (e) The aqueous solution of X is acidic. What is the empirical formula of X?
A reaction occurs between I-(aq) and H2O2(aq) in the presence of H3O+, forming I2(aq) and H2O(l). (1). Write a balanced equation for the reaction.
Write the expression Kc for the following reactions. (a) Fe2+(aq) + Ce4+(aq) ⇋ Fe3+(aq) + Ce3+(aq) (b) CaCO3(s) ⇋ CaO(s) + CO3(g)
6) Consider the following reaction:4NH3 + 50, → 4NO + 6H2O The element being oxidized and the oxidizing agent are: (a)H and NH; (b) O and NH; (c)O and O2 (d) N and O2 (e)N and NH3
Oo.168. Subject:- Chemistry
(d) (b) (c) (e) Reaction coordinate (X Y-) Potential energy 3.