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Question 2 Given the following thermochemical equations: 4 Fe,O; (5) + /, CO (8) → Fe (s) + CO,: (g) AH° =-14.0 kJ 3 Fe (s) +4 CO, (g) →4 cO (g) - Fe,0, (s) AH =+12.5 kJ Calculate the value of All° for the following reaction: a) -28.0 kJ 3 Fe;O; (5) - cO (g) → cO: (3)+2 Fe,o, (s) AH -? c) -15.5 kJ b) +40.5 kJ d) -59.0 kJ

Question 2 Given the following thermochemical equations: 4 Fe,O; (5) + /, CO (8) → Fe (s) + CO,: (g) AH° =-14.0 kJ 3 Fe (s) +4 CO, (g) →4 cO (g) - Fe,0, (s) AH =+12.5 kJ Calculate the value of All° for the following reaction: a) -28.0 kJ 3 Fe;O; (5) - cO (g) → cO: (3)+2 Fe,o, (s) AH -? c) -15.5 kJ b) +40.5 kJ d) -59.0 kJ

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Question 1 H;SO, is a The blanks in the sentence above should be filled in with which of the respective classifications? a. strong acid, weak base, salt b. weak base, acid, salt c. salt, base, salt d. weak acid, strong base, salt Question 2 Given the following thermochemical equations: Zn(OH); is a ,and CH;COONA is a I 4 Fe,O; (s) + /, CO (g) > Fe (s) + CO, (g) AH° = -14.0 kJ 3 Fe (s) +4 CO, (g) → 4 CO (g) - Fe,O, (s) AH° = +12.5 kJ Calculate the value of All° for the following reaction: 3 Fe;O; (s) + CÓ (g) → CO; (g) + 2 Fe;0, (s) AH -? c)-15.5 kJ d)-59.0 kJ a) -28.0 kJ Question 3 b) +40.5 kJ The symbol AH [HNO; (()] refers to which one of the following reactions occurring at 25 °C? a. HNO, (() → H(g) +N; (g) + O; (g) b. 4 H; (g) + 4 N, (g) + 3/2 0; (g) > HNO; (() c. HNO, (() > % H; (g) + 4 N; (g) + 3/20: (g) d. Il; (g) + N2 (g) + 0; (g) > 21INO; () Question 4 A sample of aluminum absorbed 11.17 J of heat and its temperature increased from 23.2°C to 30.5°C, What was the mass of the aluminum sample? The specific heat of aluminum is 0.90J/gK. a) 1.7 g Question 5 Which of the following solutions in water has the lowest osmotic pressure? b) 72 g c) 65 g d) 8.1 g a. 0.15 M NaCI b. 0.10 м Сасl, c. 0.15 M Ba(NO); d. 0.2 M NII, Question 6 If 35.21 ml of 0.1894 M KOH is required to neutralize 25.00 ml. of an aqueous solution of arsenic acid (HASO;), what is the concentration of the arsenic acid solution? H;AsO4 (aq) + 3 KOH (aq) → K;AsO, (aq) + 3 H;0 (E) c. 0.08892 M d. 0.1345 M a. 0.2668 M Question 7 b. 0.8003 M A 1.00 L concentrated KOH solution contains 655 g KOH. The solution density is 1.456 giml.
Transcribed Image Text:Question 1 H;SO, is a The blanks in the sentence above should be filled in with which of the respective classifications? a. strong acid, weak base, salt b. weak base, acid, salt c. salt, base, salt d. weak acid, strong base, salt Question 2 Given the following thermochemical equations: Zn(OH); is a ,and CH;COONA is a I 4 Fe,O; (s) + /, CO (g) > Fe (s) + CO, (g) AH° = -14.0 kJ 3 Fe (s) +4 CO, (g) → 4 CO (g) - Fe,O, (s) AH° = +12.5 kJ Calculate the value of All° for the following reaction: 3 Fe;O; (s) + CÓ (g) → CO; (g) + 2 Fe;0, (s) AH -? c)-15.5 kJ d)-59.0 kJ a) -28.0 kJ Question 3 b) +40.5 kJ The symbol AH [HNO; (()] refers to which one of the following reactions occurring at 25 °C? a. HNO, (() → H(g) +N; (g) + O; (g) b. 4 H; (g) + 4 N, (g) + 3/2 0; (g) > HNO; (() c. HNO, (() > % H; (g) + 4 N; (g) + 3/20: (g) d. Il; (g) + N2 (g) + 0; (g) > 21INO; () Question 4 A sample of aluminum absorbed 11.17 J of heat and its temperature increased from 23.2°C to 30.5°C, What was the mass of the aluminum sample? The specific heat of aluminum is 0.90J/gK. a) 1.7 g Question 5 Which of the following solutions in water has the lowest osmotic pressure? b) 72 g c) 65 g d) 8.1 g a. 0.15 M NaCI b. 0.10 м Сасl, c. 0.15 M Ba(NO); d. 0.2 M NII, Question 6 If 35.21 ml of 0.1894 M KOH is required to neutralize 25.00 ml. of an aqueous solution of arsenic acid (HASO;), what is the concentration of the arsenic acid solution? H;AsO4 (aq) + 3 KOH (aq) → K;AsO, (aq) + 3 H;0 (E) c. 0.08892 M d. 0.1345 M a. 0.2668 M Question 7 b. 0.8003 M A 1.00 L concentrated KOH solution contains 655 g KOH. The solution density is 1.456 giml.
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