Homework Answers
Option B and C are correct.
The second law of thermodynamics states that the entropy of spontaneous reaction always increases.
The Third law of thermodynamics is stated as follows, The entropy of a system approaches a constant value as its temperature approaches absolute zero.
Option B and C are correct.
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acide 5520 Stack 35039 Which of the following statements is a low of thermodynamics? Group of...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy c. Enthalpy d. Entropy e. Heat 15. The second law of thermodynamics states that a. the entropy of a perfect crystal is zero at 0 K b. the entropy of the universe is constant. c. the energy of the universe is increasing. d. the entropy of the universe is increasing. e. the energy of the universe is constant. 16. Which of the following are...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a...
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...
Which statement is true? A. Spontaneous changes are always accompanied by an increase in the enthalpy...
Which statement is true? A. Spontaneous changes are always accompanied by an increase in the enthalpy of the system. B. Spontaneous changes are always accompanied by a decrease in the entropy of the system. C. Spontaneous changes are always accompanied by a decrease in the enthalpy of the system. D. Most highly exothermic chemical reactions are also spontaneous chemical reactions. E. Spontaneous changes are always accompanied by an increase in the entropy of the system. For a certain chemical reaction,...
2. Decide whether each of the following statements is true or false. If false, rewrite it...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
Which of the following statements are true (select ALL that apply) (a) The standard entropy of...
Which of the following statements are true (select ALL that apply) (a) The standard entropy of any compound is greater than 0. (b) For a given compound the entropy of a molecule in the gas phase is higher than in a liquid at the same temperature. (c) In a spontaneous process the entropy of the system always increases (d) In a spontaneous process the entropy of the universe always increases. (e) The reaction entropy is always positive. (f) The standard...
Which of the following statements does not apply to the definition of an ideal gas? Group...
Which of the following statements does not apply to the definition of an ideal gas? Group of answer choices a. Intermolecular interactions are negligible. b. The Gibbs free energy only depends upon the temperature. c. The enthalpy only depends upon the temperature. d. The internal energy only depends upon the temperature. e. None. The previous answers are all correct. Consider a solid substance. Which of the following expressions is wrong? Group of answer choices a. Internal energy increases when the...
53. The third law of thermodynamics states: A) Any irreversible process results in an increase in...
53. The third law of thermodynamics states: A) Any irreversible process results in an increase in total entropy, whereas any reversible process results in no overall change in entropy. B) The entropy of a pure crystalline substance at absolute zero is zero. C) Energy is conserved. D) If AG = 0, the reaction is at equilibrium. E) None of the answers are correct 54. Which one of the following is always positive when a spontaneous process occurs? A) AS B)...
HELP!!!!! as soon as possible Question 9 (1 point) Which of the following reactions would show...
HELP!!!!! as soon as possible
Question 9 (1 point) Which of the following reactions would show an increase in entran apply. O CaCO3 (s) CaO (s) + CO28) C6H6(s) C6H6() 4 NO (g) + 6 H20 (8) 4 NH3(g) + 5 O2 (g) 2 NIS (s) + 3 O2 (g) - 2 SO2(g) + 2 NIO (s) 2503(9) 2SO2(g) + O2(g) 3 Question 8 (1 point) Which of the following has the highest entoon C6H12(l) at 200 K in a...
Which statements are true regarding reaction rates? [Select all that apply.] 1.Group of answer choices Larger...
Which statements are true regarding reaction rates? [Select all that apply.] 1.Group of answer choices Larger activation energies are associated with faster reaction rates. 2.Higher reactant concentrations are associated with faster reaction rates. 3.Reducing the activation energy for a reaction increases its reaction rate. 4.Reaction rates depend on how likely molecules are to collide in the correct orientation to react. 5.Reactions that give off heat occur rapidly. Reactions that absorb heat occur rapidly. 6.Large changes in enthalpy are associated with...
Which of the following statements is positive? Group of answer choices When the Federal Reserve increases...
Which of the following statements is positive? Group of answer choices When the Federal Reserve increases the money supply, interest rates decrease. Large budget deficits should be avoided. A tax cut that benefits low-income households is acceptable. Higher taxes are needed to support education. The standard of living in an economy is best measured by: Group of answer choices output per person. average labor productivity. total output. the inflation rate. If average labor productivity increases while population and the number...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy c. Enthalpy d. Entropy e. Heat 15. The second law of thermodynamics states that a. the entropy of a perfect crystal is zero at 0 K b. the entropy of the universe is constant. c. the energy of the universe is increasing. d. the entropy of the universe is increasing. e. the energy of the universe is constant. 16. Which of the following are...
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...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
53. The third law of thermodynamics states: A) Any irreversible process results in an increase in total entropy, whereas any reversible process results in no overall change in entropy. B) The entropy of a pure crystalline substance at absolute zero is zero. C) Energy is conserved. D) If AG = 0, the reaction is at equilibrium. E) None of the answers are correct 54. Which one of the following is always positive when a spontaneous process occurs? A) AS B)...
HELP!!!!! as soon as possible
Question 9 (1 point) Which of the following reactions would show an increase in entran apply. O CaCO3 (s) CaO (s) + CO28) C6H6(s) C6H6() 4 NO (g) + 6 H20 (8) 4 NH3(g) + 5 O2 (g) 2 NIS (s) + 3 O2 (g) - 2 SO2(g) + 2 NIO (s) 2503(9) 2SO2(g) + O2(g) 3 Question 8 (1 point) Which of the following has the highest entoon C6H12(l) at 200 K in a...
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