1. The 2nd Law of Thermodynamics states that the entropy of the universe ____
2. Determine the ∆Gº using Appendix G for the following reaction.
C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3 H2O(l)
Report your answer to four sig figs. Omit unit labels. Only add a - number is the sign is negative. Adding a + to a positive answer messes up the grading.
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1. The 2nd Law of Thermodynamics states that the entropy of the universe ____ 2. Determine...
1. Determine the ∆Sº using Appendix G for the following reaction. C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3 H2O(l) Report your answer to three sig figs. Omit unit labels. Only add a - number is the sign is negative. Adding a + to a positive answer messes up the grading. 2. Which of the following equations will have a negative ∆S? A. 3 H2(g)+ N2(g) --> 2 NH3(g) B. C6H6(l)--> C6H6(g) C. NH4OH(s)--> H2O(l)+ NH3(g) D. NaCl(s) -->...
the 2nd law of thermodynamics states A. energy of the universe is constantly increasing B.form can be maintained by consuming energy C.energy cannot be created or destroyed D. energy moves towards increasing entropy
The second law of thermodynamics states that for any spontaneous process the entropy of the universe must increase. Explain how this statement (increasing entropy) relates to: lambda G_rxn lambda H_rxn lambda S_rxn For this process under standard conditions. H_2O_($) O longleftrightdoublearrow H_2O(f), circle the correct sign you predict for (a), (b), and (c) and explain your reasoning lambda G_rxn + or - lambda H_rxn + or- lambda H_rxn + or-(d) Explain how temperature affects the sign of lambda G in...
Part A) The third law of thermodynamics relates the entropy (randomness) of matter to its absolute temperature. Which of the following statements are in agreement with the third law of thermodynamics? 1.In a gaseous state, the entropy of the system is zero. 2. At the melting point, the entropy of a system increases abruptly as the compound transforms into a liquid. 3.At zero degrees kelvin, substances maximize entropy. 4.At absolute zero, the interatomic distance within a crystal is minimized. 5.In...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
1. A 25 grams piece of unknown metal at 80 ºC is dropped into 50 grams of water at 25.0 ºC. The final temperature of the water is 26.16 ºC. What is the specific heat of the unknown metal? [Report answer to two sig figs and do not add the unit label.] 2. Determine the ∆H º for the third reaction; is it exothermic ? ClO(g) + O3(g) --> Cl(g) + 2 O2(g) ∆Hº = -29.90 kJ/mol 2 O3(g)...
D Question 23 1 pts The Second law of Thermodynamics (Law of Entropy) states: e Perpetual motion is just that It takes energy to release energy Energy can neither be created nor destroyed Everything is moving from order to disorder Question 24 Order the following reproduction sequence: (Z)ygote (G)ametes (F)ertilization (M)eiosis (Go)nads o Go, M, G, FZ Go, G. M. F. Z o Z F. Go. M. G OM. Go. G. F. Z
2. Balance the following reaction that occurs in acid, using the half-reaction method. I-1(aq) + CrO4-1(aq) --> I2(s) + Cr+3(aq) When this reaction is balanced, there will be (A) H+(aq) and (B) H2O(l) in the final balanced equation. (Enter numbers without the plus sign.) 3. Ca(NO3)2(aq) + K2CO3(aq) --> CaCO3(s) + 2 KNO3(aq) 50 mL of 1.000 M Ca(NO3)2 was reacted with excess potassium carbonate. What mass of calcium carbonate will be made? Repeat your answer to two sig figs...
1. True or False: a) A reaction is spontaneous if ΔSnn > 0. b) The Fourth Law of Thermodynamics states: The entropy of a pure, perfect crystal at O K is. c) For A(g) + B(g) D(g) + E(g), if ΔΗ'm < 0 and Δ5%n > 0, the reaction is spontaneous regardless of temperature. d) For A(g) + B(g) → D(g) + E(g), ifAH"m > 0 and Δ5%n < 0, it will be possible to find a temperature above which...
5. Balance the following reaction that occurs in base, using the half-reaction method. NO(g) + MnO4-1(aq) ---> NO3-1(aq) + MnO2(s) When this reaction is balanced, there will be (A) OH-1(aq) and (B) H2O(l) in the final balanced equation. (Enter numbers without the plus sign.) 6. 0.122 grams of an unknown triprotic acid was neutralized with 37.2 mL of a 0.125 M NaOH solution. What is the Molar Mass of the unknown acid? Report the answer to three sig figs and...