A spontaneous reaction always has:   A. a positive enthalpy change and a negative entropy change.   B. a positive Gibbs free energy change.   C. a negative Gibbs free energy change.   D. a standard enthalpy of formation equal to zero for one of the reactants.

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A: Answer - a) a) when products are lower in energy than the reactants - the reaction is spontaneous.…

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Q: Given the data:       N2(g) + O2(g) ---> 2NO(g)             DH = +180.7 kJ       2NO(g) + O2(g)…

A: (1) N2g + O2g → 2NOg         ∆H = +180.7 KJ   2NO(g) + O2(g) → 2NO2(g)       ∆H = -113.1 KJ…

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Q: For a reaction with Keq = 0.8 and Ea = 80 kJ/mol, decide which of the following statements is (are)…

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Q: the "free" energy for a fictitious example where the reaction is exothermic (AH=-100 kJ) but has a…

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Q: TRUE OR FALSE? 1. Entropy changes cannot be measured with a calorimeter like enthalpy changes. 2.…

A: 1. False Entropy change can be calculated from Calorimeter by using equation as follows;    ∆S  =…

Q: spontaneous?

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Q: he second law of thermodynamics favors     A. processes that have zero entropy of the universe…

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Q: Calculate the free energy(ΔG°)of the following reactions: a)H2(g) + O2(g)→ H2O2(g)b)H2O2(g) + H2(g)…

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Q: The change in entropy, Δ?∘rxn, is related to the the change in the number of moles of gas molecules,…

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Q: Using the thermodynamic information: 1/2 N2(g) + 1/2 02(g)--> N0(g) delta H degrees = 90.4 kJ/mol…

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Q: For a reaction with Keq = 0.8 and Ea = 80 kJ/mol, decide which of the following statements is (are)…

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Q: At 381 K, the following reaction takes place: Hg2Cl4(g) + Al2Cl6(g) --> 2 (HgAlCl5)(g) ΔH = +10 kJ…

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Q: Which statement concerning entropy is true? (A) The more microstates a system has, the higher the…

A: Entropy of a system can also be defined as the measure of disorder of system.

Q: Fill in the blanks with either negative, positive or zero. According to the second law of…

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Q: What statement is true?     During an endothermic reaction the entropy of the surroundings…

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Q: If the number of gas molecules within a system increases during a chemical reaction (constant volume…

A: a. The system will increase in entropy because there are greater possible configurations.

Q: In discussing the energy of a physiological system, the Gibbs free energy is most relevant. Since…

A: Answer

Q: Which of the following statements is true? Group of answer choices A reaction that is only…

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Q: For a reaction with Keq = 0.8 and Ea = 80 kJ/mol, decide which of the following statements is (are)…

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Q: The first law of thermodynamics is extremely important in every chemical reaction, but what exactly…

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Q: Use the standard free energy data in the Standard State Thermodynamic Data table to determine the…

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Q: TRUE OR FASLE Entropy increases from solid to liquid to gas

A: Entropy represents degree of disorder or randomness.

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Q: If a chemical reaction is spontaneous, the total entropy of the chemical systems and its…

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Q: Would conditions of +ΔH and -ΔS favor a spontaneous or non-spontaneous reaction? Why? a.…

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Q: The entropy and enthalpy of a reaction are both negative. Is the reaction spontaneous? Explain

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Q: Consider planet Earth as a thermodynamic system. Is Earth thermodynamically or kinetically stable

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