Homework Answers
1) From energy conservation 
H ( system ) +
H ( surrounding) = 0
H
( surrounding ) = -
H ( system) = 9.08 KJ
2) at constant temperature
S ( surrounding) = —
H( system ) / T ( surrounding)
S
( surrounding) = 9.08 x 103 J / 298 K = 30.47 J/ K
3)
S ( universe ) =
S ( system ) +
S ( surrounding)
S
( universe ) = 298 + 30.47 = 328.47 J / K
4) since
S ( universe) >0
so process is spontaneous.answer is yes.
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C2 T10HW Question 11 Homework – Unanswered Fill in the Blanks Type your answers in all...
C2 T10HW Question 11 Homework – Unanswered Fill in the Blanks Type your answers in all of the blanks and submit Consider the following information: 2Na(g) + 3N2(g) + 2NaN:(s) The AH is -87.3 kJ/mol. The Spanis - 344.2 J/mol. The "per mole" refers to the sodium azide. Given the above information, answer the questions below. Assume that the system and surroundings are in thermal equilibriu 298K AHPn for 2 moles of sodium azide produced is Type your answer here...
C2 T14HW Question 6 Homework • Unanswered Fill in the Blanks Consider the following redox reaction...
C2 T14HW Question 6 Homework • Unanswered Fill in the Blanks Consider the following redox reaction at 298K: 3Fe2+ (aq) + 2Cr(s) + 3Fe(s) + 2Cr3+ (aq) The total number of electrons transferred in this reaction = Eceu- AG°= kJ/mol (yes/no) Is the reaction spontaneous as written?
QUESTION 23 - For the reaction below at 298 K: 4NO (9) N20 (9) + N203...
QUESTION 23 - For the reaction below at 298 K: 4NO (9) N20 (9) + N203 (9) AH = -192.7 kJ and AS = -308.2 J/K Which of the following statements is TRUE? AG >0 at 298K At higher temperatures, the reaction will be spontaneous At lower temperatures, the reaction will be spontAreous The reaction is spontaneous at all temperatures. None of the above are true. QUESTION 24 What is Asº at 298 K for the following reaction? 2 H2S(g)...
C2 T12HW Question 6 Homework . Unanswered Fill in the Blanks Now for a challenge, compute...
C2 T12HW Question 6 Homework . Unanswered Fill in the Blanks Now for a challenge, compute the boiling point her altitude where the external pressure is 0.65 atm. The boiling point at that elevation is Additional Thermodynamic Data AH AGS AGO Substance (25°C kJ/mol) (25°C kJ/mol) (25°C J/mol-K) CH3NO2 (1) -112.6 -14.6 171.8 CH_NO2 (g) -74.3 -6.8 275.0 SO3 (s) -453.5 -374.2 70.7 S03 (1) -441.0 -373.8 113.8 SO2 (g) -395.7 -371.1 256.8
4) Calculate the ΔGrxn using the following information. 4 HNO3(g)+5N2H40)- 7 N2(8) +12 H200) -133.9 AH。f...
4) Calculate the ΔGrxn using the following information. 4 HNO3(g)+5N2H40)- 7 N2(8) +12 H200) -133.9 AH。f (kJ/mol) s°C/mol K) 50.6 -285.8 266.9 121.2 191.6 70.0 A. Determine the enthalpy change 1° for the reaction at 298 K B. Determine aSsurr for the re C. Determine aSsvs for the reaction. D.Find the entropy change of the universe. E. Determine △G"for this reaction. Will this reaction be spontaneous? E. Determine the equilibrium constant Kp at 298K.
26-6 Homework • Answered • Due Sep 27th, 11:59 PM Fill in the Blanks Type your...
26-6 Homework • Answered • Due Sep 27th, 11:59 PM Fill in the Blanks Type your answers in all of the blanks and submit How does the auditor use risk assessments when planning the audit? 1. Overall approach 2. Particularly consider 3. Design further audit procedur Answered Resubmit 06-5 - Risks Homework • Unanswered • Due Sep 27th, 11:59 PM Fill in the Blanks Type your answers in all of the blanks and submit An auditor might assess levels of...
Please help with #4&5. Will rate high is answers are correct. Thank you! 4. Using the...
Please help with #4&5. Will rate high is answers are
correct. Thank you!
4. Using the given standard molar entropies, calculate the standard entropy change, AS, for the following reaction at 298 K: 2 H2(g) + O2(g) → 2 H20(1) O2(g) 205.0 (H2O(1) 79.91 H2(g) Sº (J/K) 130.58 a) 326.3J/K b) 88.5 J/K c) 306.34 J/K d) -306.34 J/K e) -386.25 J/K 5. Calculate the standard free-energy change for the formation of NO(g) from N2(g) and O2(g) at 298 K:...
Now let's actually predict the signs for this equilibrium at 100°C: H2O(liquid) =H2O(vapor) For each thermodynamic...
Now let's actually predict the signs for this equilibrium at 100°C: H2O(liquid) =H2O(vapor) For each thermodynamic parameter state if its value will be: positive, value, zero or unknown AH- AS AGE AH surroundings AS surroundings - AS universe 0 * 3? TWICE * 0 2Na(g) + 3N2(g) + 2NaN3(s) The AH xn is -87.3 kJ/mol. The ASP is - 344.2 J/mol. The "per mole" refers to the sodium azide. Given the above information, answer the questions below. Assume that the...
need help with 7 please QUESTION 7 Consider the reaction: 2 NO(g) + 2 H2(g) →...
need help with 7 please
QUESTION 7 Consider the reaction: 2 NO(g) + 2 H2(g) → N2(g) + 2 H2O() for which AH° =-752.2 kJ and AS9 = -351.6 J/K at 298.15 K. Calculate the entropy change of the universe when 2.447 moles of NO(g) react under standard conditions at 298.15 K a.-866.5J/K b.5314 J/K OC -349.1 J/K O d. 7034 JK e.-2701 JK
QUESTION 19 Which of the following acids should be used to prepare a buffer with a...
QUESTION 19 Which of the following acids should be used to prepare a buffer with a pH of 5.9? HOCH2COOH, Ka = 3.5 x 10-4 CICH2COOH, Ka = 1.4 x 10-3 HBrO, Ka = 2.3 x 10-9 C6H13NO4S, Kg = 7.08 x 10-7 HCIO2, Ka = 1.1 x 10-2 QUESTION 20 For the following reaction, N2 (9) + 1/2O2 (g) → N20 (9) At 298 K, AS surr = - 275.34 J/K and ASsys = -74.3 J/K. Which of the...
C2 T10HW Question 11 Homework – Unanswered Fill in the Blanks Type your answers in all of the blanks and submit Consider the following information: 2Na(g) + 3N2(g) + 2NaN:(s) The AH is -87.3 kJ/mol. The Spanis - 344.2 J/mol. The "per mole" refers to the sodium azide. Given the above information, answer the questions below. Assume that the system and surroundings are in thermal equilibriu 298K AHPn for 2 moles of sodium azide produced is Type your answer here...
C2 T14HW Question 6 Homework • Unanswered Fill in the Blanks Consider the following redox reaction at 298K: 3Fe2+ (aq) + 2Cr(s) + 3Fe(s) + 2Cr3+ (aq) The total number of electrons transferred in this reaction = Eceu- AG°= kJ/mol (yes/no) Is the reaction spontaneous as written?
QUESTION 23 - For the reaction below at 298 K: 4NO (9) N20 (9) + N203 (9) AH = -192.7 kJ and AS = -308.2 J/K Which of the following statements is TRUE? AG >0 at 298K At higher temperatures, the reaction will be spontaneous At lower temperatures, the reaction will be spontAreous The reaction is spontaneous at all temperatures. None of the above are true. QUESTION 24 What is Asº at 298 K for the following reaction? 2 H2S(g)...
C2 T12HW Question 6 Homework . Unanswered Fill in the Blanks Now for a challenge, compute the boiling point her altitude where the external pressure is 0.65 atm. The boiling point at that elevation is Additional Thermodynamic Data AH AGS AGO Substance (25°C kJ/mol) (25°C kJ/mol) (25°C J/mol-K) CH3NO2 (1) -112.6 -14.6 171.8 CH_NO2 (g) -74.3 -6.8 275.0 SO3 (s) -453.5 -374.2 70.7 S03 (1) -441.0 -373.8 113.8 SO2 (g) -395.7 -371.1 256.8
4) Calculate the ΔGrxn using the following information. 4 HNO3(g)+5N2H40)- 7 N2(8) +12 H200) -133.9 AH。f (kJ/mol) s°C/mol K) 50.6 -285.8 266.9 121.2 191.6 70.0 A. Determine the enthalpy change 1° for the reaction at 298 K B. Determine aSsurr for the re C. Determine aSsvs for the reaction. D.Find the entropy change of the universe. E. Determine △G"for this reaction. Will this reaction be spontaneous? E. Determine the equilibrium constant Kp at 298K.
26-6 Homework • Answered • Due Sep 27th, 11:59 PM Fill in the Blanks Type your answers in all of the blanks and submit How does the auditor use risk assessments when planning the audit? 1. Overall approach 2. Particularly consider 3. Design further audit procedur Answered Resubmit 06-5 - Risks Homework • Unanswered • Due Sep 27th, 11:59 PM Fill in the Blanks Type your answers in all of the blanks and submit An auditor might assess levels of...
Please help with #4&5. Will rate high is answers are
correct. Thank you!
4. Using the given standard molar entropies, calculate the standard entropy change, AS, for the following reaction at 298 K: 2 H2(g) + O2(g) → 2 H20(1) O2(g) 205.0 (H2O(1) 79.91 H2(g) Sº (J/K) 130.58 a) 326.3J/K b) 88.5 J/K c) 306.34 J/K d) -306.34 J/K e) -386.25 J/K 5. Calculate the standard free-energy change for the formation of NO(g) from N2(g) and O2(g) at 298 K:...
Now let's actually predict the signs for this equilibrium at 100°C: H2O(liquid) =H2O(vapor) For each thermodynamic parameter state if its value will be: positive, value, zero or unknown AH- AS AGE AH surroundings AS surroundings - AS universe 0 * 3? TWICE * 0 2Na(g) + 3N2(g) + 2NaN3(s) The AH xn is -87.3 kJ/mol. The ASP is - 344.2 J/mol. The "per mole" refers to the sodium azide. Given the above information, answer the questions below. Assume that the...
need help with 7 please
QUESTION 7 Consider the reaction: 2 NO(g) + 2 H2(g) → N2(g) + 2 H2O() for which AH° =-752.2 kJ and AS9 = -351.6 J/K at 298.15 K. Calculate the entropy change of the universe when 2.447 moles of NO(g) react under standard conditions at 298.15 K a.-866.5J/K b.5314 J/K OC -349.1 J/K O d. 7034 JK e.-2701 JK
QUESTION 19 Which of the following acids should be used to prepare a buffer with a pH of 5.9? HOCH2COOH, Ka = 3.5 x 10-4 CICH2COOH, Ka = 1.4 x 10-3 HBrO, Ka = 2.3 x 10-9 C6H13NO4S, Kg = 7.08 x 10-7 HCIO2, Ka = 1.1 x 10-2 QUESTION 20 For the following reaction, N2 (9) + 1/2O2 (g) → N20 (9) At 298 K, AS surr = - 275.34 J/K and ASsys = -74.3 J/K. Which of the...
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