Given the standard enthalpy for the following reaction:Br(g) + Br(g) Br, (g)->kJΔΗ° = - 194.molCalculate the change in mass in kg per mol of Br2 formed. Round your answer to 3 significant digits.Note: Reference the Unit conversions for derived SI units and Fundamental constants tables for additional information.kgmolx105

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Answered: Given the standard enthalpy for the…

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...

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The G.R.A.S.P. method
[References] Use the References to access important values if needed for this question. When HBr(g) reacts with Cl₂(g) according to the following reaction, 9.902 kcal of energy are evolved for each mole of HBr(g) that reacts. Complete the following thermochemical equation. 2 HBr(g) + Cl₂(g) → 2 HCI(g) + Br₂(g) AH = kcal
Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) 2 MCI, (аq) + 3 Н, (2) AH1 = -556.0 kJ 2. HCl(g) HCl(aq) AĦ2 = -74.8 kJ 3. H, (g) + Cl, (g) → 2 HCI(g) ΔΗ = -1845.0 kJ 4. MCI, (s) – MCI, (aq) AĦ4 = -493.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) – - 2 MCl, (s) -556.0 ΔΗ- Incorrect
6
When 145 mL of 0.212 M NaCl(aq) and 145 mL of 0.212 M AgNO3(aq), both at 21.1°C, are mixed in a coffee cup calorimeter, the temperature of the mixture increases to 23.7°C as solid AgCl forms. NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq) This precipitation reaction produces 3.14 ✕ 103 J of heat, assuming no heat is absorbed by the calorimeter, no heat is exchanged between the calorimeter and its surroundings, and that the specific heat and density of the solutions are the same as those for water (4.18 J/g·°C, and 0.997 g/mL, respectively). Using this data, calculate ΔH in kJ/mol of AgNO3(aq) for the given reaction.
Determine the enthalpy of reaction: 2NH3+2CH4+302=2HCN+6H2O
Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) → 2 MCl, (aq) + 3 H, (g) AH1 = -698.0 kJ HCl(g) → HCI(aq) AH = -74.8 kJ H, (g) + Cl, (g) → 2 HCl(g) AH3 = -1845.0 kJ MCI, (s) → MCI, (aq) AH = -292.0 kJ Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl, (g) → 2 MCI, (s) 2. 3. 4.
Chemical handwarmers work by using the oxidation of iron to release heat (Q). In this reaction, the sign for the enthalpy change is __________ (+ or -) and the reaction is said to be __________(exothermic/endothermic). When ammonium nitrate dissolves in water, heat (Q) is absorbed. During this process, the sign for the enthalpy change is __________ (+ or -) and the reaction is said to be __________(exothermic/endothermic).
When 130. mL of 0.204 M NaCl(aq) and 130. mL of 0.204 M AgNO3(aq), both at 21.1°C, are mixed in a coffee cup calorimeter, the temperature of the mixture increases to 23.6°C as solid AgCl forms. NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq) This precipitation reaction produces 2.71x10³ J of heat, assuming no heat is absorbed by the calorimeter, no heat is exchanged between the calorimeter and its surroundings, and that the specific heat and density of the solutions are the same as those for water (4.18 J/g.°C, and 0.997 g/mL, respectively). Using this data, calculate AH in kJ/mol of AgNO3(aq) for the given reaction. 4.0✔✓ kJ/mol
Constants | Periodic Table Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: Part B AHm = En,AH: (products)- E n,AH (reactants) For the reaction given in Part A. how much heat is absorbed when 3.50 mol of A reacts? where n represents the stoichiometric coefficients. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) Value Units Submit Previous Answers X Incorrect; Try Again; 29 attempts remaining Provide Feedback Pearson O 1:35 21
Which of the following equations is a mathematical definition of enthalpy? O AH = AS - TAG Ο ΔΗ-ΔΕ-ΡAV Ο ΔΗ-ΔG+TAS O AH = AG - TAS O AH = AS + TAG O AH = AE + PAV
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