For a particular reaction at 140.6 °C, AG = 560.53 kJ/mol, and AS = 131.79 J/(mol · K). Calculate AG for this reaction at –68.1 °C. AG = kJ/mol

Q: a) H2(g)→ 2H(g) b) N2 (g. 1 atm) → N, (g, 8 atm) C) 2SO3(g) → 2SO,(g) + O2(g) d) C (Diamond) → C…

A:

Q: Which one has a higher entropy? Explain briefly. MgC2(aq), NaCl(aq)

A: Entropy is a measure of the randomness of the system. The entropy of a system can be calculated by…

Q: The Keq of a reaction is exactly 1. This means... *

A: Answer: neither reactants nor products are favored (over the other) Explanation: Consider the…

Q: a) Calculate AGxn for the reaction (AHrxn=572 kJ; ASrxn° = 179 J/K).

A: We know ∆Gorxn = ∆Hrxno - T∆Srxno . For a reaction to be spontaneous ∆G should be -ve . At…

Q: At what temperatures is the following process spontaneous at 1 atm? ΔH° = +20 kJ and ΔS° = - 50 J/K

A: The reaction is always non-spontaneous at all temperatures.

Q: A spontaneous process usually involves an increase in temperature (an exothermic reaction), yet when…

A: Solution- The reaction is favorable when it causes an enthalpy decrease and an increase in system…

Q: Calculate AG at 45°C for a reaction for which AHº = -76.6 kJ and AS° =-392 J/K AG° kJ

A: here the two thermodynamic  property  given  ∆H°=-76.6KJ∆S°=-392J/KUsing the formula∆G°=∆H°-T∆S…

Q: 1. For the reaction at 25̊ C, find ∆G° and determine what type of reaction/process takes place. a.…

A: Gibbs energy or free enthalpy, is a quantity that is used to measure the maximum amount of work done…

Q: Frequently, when salts dissolve in water, the solution becomes warm. Such a process is exothermic.…

A: Endothermic process: It is the process in which the system absorbs heat from the surrounding and as…

Q: 1. Consider the freezing of liquid water at -10°C and 1 atm. For this process, what are the signs…

A: Exothermic transitions are those transitions that release heat for example freezing and condensation…

Q: Which of the following changes will always be true for a spontaneous reaction?  +ΔG  –ΔG  +ΔS…

A: The spontaneous reaction means the reaction which occur without intervenation at given set of…

Q: Consider the reaction: 2KClO3(s)~2KCl(s)+3O2(g) At a standard state, △G for the reaction is -35kJ.…

A: The value of gibbs free energy change helps us to find if the reaction at a particular temperature…

Q: Above what temperature does the following reaction become nonspontaneous? 2 H2S(g) +3 02(g) - 2…

A: Given, The balanced chemical equation is given below, 2H2O(g)+3O2(g)→2SO2(g)+2H2O(g) Then, ∆H=-1036…

Q: Which method would you choose to calculate ΔG° for a reaction at a temperature other than 25 °C?

A: Gibbs free energy : The thermodynamic potential which is used to calculate the maximum reversible…

Q: Dichotomize between thermodynamics and thermochemistry.

A: We have to  discuss the dichotomize between thermodynamics and thermochemistry.

Q: 2. Calculate the temperature in which the following reactions become spontaneous. b) Reaction B: AH…

A:

Q: The ∆H and ∆S for the decomposition of sulfur tetrabromide to sulfur and liquid bromine is +115 kJ…

A:

Q: When AH = -133 kJ and AS = -0.133 kJ/K, calculate AG at room temperature, 25 °C, for the following…

A: The spontaneous nature of the reaction is determined by calculating the change of free energy of the…

Q: 1. What is spontaneous reaction and nonspontaneous reaction? Define each. 2. Indicate whether the…

A: The answer of the question is----------- The spontaneous reaction is a reaction that goes towards…

Q: (C2H5OH ) +(H2) →(CH3CHO) (AS = 114.2 J/K),(AH = 68.95 KJ/K ) %3D Calculate AG for this reaction at…

A:

Q: A reaction has the following thermochemical values at 272.15 K: ΔH = -189.3 kJ mol-1 ΔS = -166.0 J…

A: Given-> Temperature (T) = 272.15 K ∆H = -189.3 kJ.mole-1 = -189300 J.mole-1(1KJ=1000J) ∆S =…

Q: Read the descriptions of physical or chemical changes in the table below. Then decide whether the…

A: Any reaction is considered to be spontaneous only when there is increase in randomness of molecules.…

Q: Consider the following thermochemical equation: H2O2(1) H2O(1) + %02(g) AH= -98.2 kJ When is this…

A:

Q: The reaction for which AH° = – 1137 kJ & AS°=0.496 kJ/K at 45° C will go spontaneously.

A: From given data  ∆H°= -1137 kJ ∆S°= 0.496 kJ/K T= 45°C= 273 +45 =318 K  Formula used  ∆G°=∆H°-T∆S°…

Q: The standard reaction free energy AG =-34. kJ for this reaction: N2(9) + 3 H2(g)→2 NH3(g) Use this…

A: Given that,

Q: Consider the following process: C(s, diamond) --> C(s, graphite) deltaH°; (Cs, diamond) = 1.9…

A:

Q: ) Are the following processes spontaneous or nonspontaneous? What is the sign on AG? a. Water…

A: The spontaneous reaction occurs without any external conditions whereas the nonspontaneous reaction…

Q: A reaction has the following thermochemical values at 263.15 K: ΔH = -196.8 kJ mol-1 ΔS = -168.7 J…

A: Given for a reaction  delta H = -196.8 KJ mol-1  delta S = -168.7 JK-1 mol-1 Temperature  = 263.15 K…

Q: 1. Consider the freezing of liquid water at - 10°C and 1 atm. For this process, what are the signs…

A: Freezing of water at -10℃ and 1 atm, H2O (l) ⇌ H2O (s)

Q: When the environment is contaminated by a toxic or potentially toxic substance (for example, from a…

A: It is stated by second law of thermodynamics, that entropy of universe gets increased in a…

Q: In the late eighteenth century Priestley prepared ammonia by reacting HNO3(g) with hydrogen gas. The…

A: We are given the balanced chemical equation for the preparation of NH3 as follows: HNO3(g) +…

Q: Determine the AH (AH ) for the reaction CH,(g) + 20, (g) → 2H,0(g) + CO,(g) Given: Substance AH? mol…

A: Answer is explained below.

Q: 3. The standard free energy change at room temperature may be calculated as   A,…

A: Given  A, ΔG°=∑νΔG°(products)−∑νΔG°(reactants)   B, ΔG°=∑νΔG°(reactants)−∑νΔG°(products)   C,…

Q: For a reaction for which AH = -142 kJ/mol and AS = -178 J/mol· K, which of the following statements…

A: If ∆G is negative, the process is spontaneous and may proceed in the forward direction. If ∆G is…

Q: When crystalline solid barium hydroxide octahydrate and crystalline solid ammonium nitrate are…

A: Recall the following relation     ∆G=∆H-T∆SFor any spontaneous process, ∆G<0  and for exothermic…

Q: Above what temperature (in Kelvin) does the following reaction become nonspontaneous?   FeO(s) +…

A: if ΔH and ΔS are both negative , so spontaneous at low temperature , non spontaneous at high temp.…

Q: The decomposition of calcium carbonate is given by the reaction, CaCO3(s) → CaO(s) + CO2(g).…

A: (a)The reaction for the decomposition of one mole of calcium carbonate is obtained by reversing the…

Q: Which of the following processes results in the largest decrease in Entropy? The heat of fusion of…

A: Entropy an be defined as the thermal energy per unit temperature that is unavailable for doing a…

Q: Given the reactions,   X(s)+12O2(g)⟶XO(s)   ΔH=−637.9 kJ   XCO3(s)⟶XO(s)+CO2(g)ΔH=+480.9 kJ   what…

A: The given reactions are:

Q: 6. Consider the reaction: N204(g) + 2NO2(g) Calculate AG for the reaction above at a temperature of…

A:

Q: What is the free energy change for the process shown here under the specified conditions? T = 25…

A: We know that ∆G = ∆G° + RTlnQ ..(1) Here, Q = pH2^3*pN2^1/pNH3^2 = (0.250)^3(0.870)/(12.9)^2 =…

Q: Read the descriptions of physical or chemical changes in the table below. Then decide whether the…

A: A table of questions based on spontaneity, which are to be accomplished.

Q: Which best describes the entropy change for the following process? CO2(g) + H2(g) CO(s) + H2O(g)

A: Question 1 The number of gaseous compounds decreased in the product. So that randomness decrease…

Q: What is the free energy change for the process shown here under the specified conditions? T= 25 °C,…

A: Calculation of QP: QP=PN2×PH23PNH32=0.870×0.250312.92=0.000327

Q: Predict the sign of AG for the following reactions if each reaction was an exothermic. Does the…

A: We know , ∆G = ∆H -T∆S For exothermic reaction ∆H is a negetive quantity.

Q: Given the following equation, N20(g) + NO28) → 3 NO(g) AG°rxn = -23.0 kJ Calculate AG° rxn for the…

A: When a thermochemical equation is multiplied with a number then its ∆H° or ∆G° value also gets…

Q: Below what temperature does the following reaction become nonspontaneous? 2 HNO3(aq) + NO(g) • 3…

A:

Q: For the reaction: N2(g) + 2O2(g) + 16.2 kJ ➜ 2 NO2(g) As nitrogen reacts with oxygen, the heat of…

A: Nitrogen dioxide = N2O Heat of formation of N2 = 0 kJ Heat of formation of O2 = 0 kJ If heat is…

Q: Calculate ΔH for the reactionNO(g) + O(g)---->NO2(g)given the following information:NO(g) + O3(g)…

A: The given chemical equations are represented as modified equations given below.

Q: Calculate ΔH for the reaction CuS(s)+ Cu(s)→ Cu2S(s), given the following equations: 2 Cu(s)+ O2(g)→…

A: Interpretation - To determine the ∆H for the reaction CuS(s)+ Cu(s)→ Cu2S(s) by the given data which…