Which of the following processes are spontaneous?(a) A satellite falls to Earth. (b) Water decomposes to H₂ and O₂ at 298 K and 1 atm. (c) Average car prices increase

Q: If enthalpy is +220 kJ for a reaction and entropy is +120 J, at what temperature is this…

A: The spontaniety of any reaction is decided by the Gibb's free energy change if the reaction. Any…

Q: The depletion of ozone in the stratosphere can be summarized by this equation: 203(g) 302(g) 03(g)…

A: The objective of the question is to determine-i) The change in entropy and the change in Gibbs free…

Q: AH-2044 kJ and AS-103 J/K For reaction: C₂H₂(g) + 5O₂(g) + 3 CO₂ (g) + 4H₂O(g) ta) Calculate AG at…

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Q: The element mercury, Hg, is a silvery liquid at room temperature.  The normal freeing point of…

A: In this question, we want to determine the ∆S value means entropy change in J/K unit. You can see…

Q: Calculate the entropy changes for the following processes: Melting of one mole of tin at its melting…

A: Entropy change of any process at constant temperature and pressure is given by  ΔS = Q / T where ΔS…

Q: When heated, CaCO3 decomposes into CaO and 2 CO₂ according to the following equation: CaCO3(s) =…

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Q: For a particular reaction, ∆H = -32 kJ and ∆S = -98 J>K. Assume that ∆H and ∆S do not vary with…

A: a. Given : ΔH = -32 kJ  ΔS = -90 J/K 1) To calculate Temperature at which  ΔG=0  ΔG = ΔH  - TΔS ΔG=0…

Q: Is the following reaction spontaneous at room temperature (25.0 °C) ? 2 H2S(g) + 3 O2(g) 2 SO2(g) +…

A: Interpretation: The given reaction is spontaneous at room temperature or not is to be determined. At…

Q: Why is it usually more convenient to measure ΔH than ΔE?

A: Given statement,           It is usually more convenient to measure ΔH than ΔE.

Q: For each of the following processes, indicate whether the signs of ∆S and ∆H are expected to be…

A: Enthalpy of sublimation the amount of energy that must be added to 1 mole of solid at constant…

Q: For the reaction CaO(s) + CO2(g)CACO3(s) at 298 K, AG = -130.9 kJ/mol, AH= -178.3 kJ/mol, AS = -159…

A: For spontaneous reaction, value of  ΔG is negative. For non- spontaneous reaction,  value of ΔG is…

Q: A process of synthesizing NH3 through the reaction: 3H, (g) + N (g) 2 2NH (g) AG°(NH ) = 16500/…

A: The catalyst currently used in the Haber process is finely divided iron mixed with potassium…

Q: Which of the following processes are spontaneous and which are nonspontaneous:formation of CH4 and…

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Q: At what temperature would you expect a reaction to become spontaneous that has ΔH=234 kJ and ΔS=234…

A: Given that, for a given reaction, the enthalpy changes and entropy changes as follows --- Enthalpy…

Q: Which substance has the higher entropy?(a) dry ice (solid CO2) at −78 °C or CO2(g) at 0 °C(b) liquid…

A: The substance which has higher entropy has to be predicted.

Q: Is it possible to have a reaction where Kc = Kp? If so, under what conditions wouldthis relationship…

A: The relationship between the Kp and Kc for any gas-phase reaction is given by,…

Q: A key step in the production of sulphuric acid is the oxidation of SO2(g) + O2(g) → 2SO3(g) At 98K,…

A: Given reaction at 298 K;. SO2(g) + O2(g) → 2SO3(g)   ∆G°sys = -500.51 KJ    ∆H°sys = -494.61 KJ…

Q: Suppose a reaction has DH > 0 and DS > 0; that is, both enthalpy and entropy changes have positive…

A: The Gibbs-Helmholtz equation is: ∆G = ∆H - T∆S.  If ∆G is negative then the reaction will be…

Q: 9) Estimate the change in the Gibbs energy of 100 cm³ of water when the pressure acting on it is…

A: Gibbs free energy is also known as free energy: It is defined as the measure of the maximum…

Q: A helium-filled balloon at 1.00 atm pressure has a volume of 1.410 L. It is placed in a freezer and…

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Q: Which reaction(s) will be spontaneous at all temperatures? : 4NH3(g) + O2(g) → 2N2(g) + 6H2O(g) ΔrH…

A: For a chemical reaction to be spontaneous, Gibbs free energy, ∆rG should be negative. ∆rG is…

Q: (a) Is the reaction spontaneous at 25°C? (b) The solid decomposed to NO2 and O2 at 25°C. Is the…

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Q: Determine whether the following process are spontaneous or non-spontaneous. Write your answers on…

A: Since you have posted a question with multiple subparts, we will solve only first three subparts for…

Q: For the reaction   2 PF5(g) + 5 H2(g) →  2 P(g) + 10 HF(g), calculate ΔGº and determine whether the…

A: Given,

Q: The enthalpy for a certain process is 146.4 kJ/mol and the entropy for the process is 463.6 J/K.  At…

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Q: Do not give handwriting solution. Calculate the entropy change, ΔS, for the following processes. If…

A: Entropy (S) is a parameter that is related to the disorders present in the system. The entropy value…

Q: A crucial reaction for the production of synthetic fuels is the conversion of coal to H2 with steam.…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: ΔHorxn = 102 kJ and ΔSorxn = 299 J K-1. Determine the minimum temperature (in K) at which the…

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Q: 11) Why can endothermic reactions be spontaneous?

A: Introduction: Endothermic reaction: The reaction which requires heat to form the product is called…

Q: 24) A 1.50 g sample of pure sucrose is burned in a bomb calorimeter that has a heat capacity of…

A: Mass of Sucrose (m)= 1.50 g  Heat Capacity (C) = 8.930 kJ/°C Change in temperature (∆T) = 26.77°C -…

Q: High levels of ozone (O3) make rubber deteriorate, green plants turn brown, and many people have…

A: a)  Formation of O3 from O2 can be written as : 32O2 (g) →O3(g)  Now calculating the change in…

Q: For the reaction depicted in the molecular scenes, X is redand Y is green.(a) Write a balanced…

A: Entropy explains the measure of randomness of a given system. For a reaction, the entropy would be…

Q: Without consulting Appendix B, arrange each group in or-der of increasingstandard molar entropy…

A: (a) Diamond has an ordered three dimensional crystalline shape, followed by graphite with an ordered…

Q: Consider the reaction for the decomposition of carbon tetrachloride gas:CCl4(g)¡C(s, graphite) + 2…

A: (a) The given reaction is, CCl4g→Cs,graphite+2Cl2g ∆H=+95.7 kJ∆S=+142.2 J/KT=25°C=25+273K=298 K

Q: 38. For this process at 25 °C: H2O(g) H20 (A) AH is negative as energy is released. (B) AH is…

A: Given reaction  H2O (g) -------> H2O (l)

Q: During an energy exchange, a chemical system absorbs energy from its surroundings. What is the sign…

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