Calculate ∆Gº for the reaction, C3H8(g)+5O2(g)→3CO2(g)+4H2O(g), where ∆Gfº=-23.5 kJ/mol for C3H8(g), -394 kJ/mol for CO2(g), and -229 kJ/mol for H2O(g): 600 kJ -600 kJ -2070 kJ 2070 kJ

Q: Which process has a larger entropy change: melting ice or boiling water? Explain.

A: The entropy is the degree of randomness or disorder of matter. Gas particles have higher kinetic…

Q: 1. In which of the following cases do you observe a spontaneous process? А. AS = 10 J/K, AS =-10 J/K…

A: We are authorised to solve only one question at a time. Since you have not mentioned, we are solving…

Q: Given these values, ΔHorxn = +75 kJ; ΔSorxn = +120 J/K; T = 298 K; calculatethe free energy change…

A: The importance of Gibbs energy is that it gives information about the spontaneity of the reaction or…

Q: Calculate ΔHf for HCN(g) at 25°C, given the following related reaction at 25°C,  2 NH3(g) + 3 O2(g)…

A: given, 2 NH3(g) + 3 O2(g) + 2 CH4(g) → 2 HCN(g) + 6 H2O(g); ΔHrxn = -870.8 kJ ΔHf = -80.3 kJ/mol for…

Q: What is the sign for each of the following? (Change in) a. S, H, G for the evaporation of a…

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Q: For the following reaction:    H° = -1037 kJ and S° = -153 J/K Calculate G° at 25°C for this…

A: Given that : H° = -1037 kJ = -1037000 J and S° = -153 J/K We have to calculate G° at T = 25°C = 298…

Q: gasoline (C8H18) in a car engine, results in a large amount of energy released as heat. 2 C8H18 (l)…

A: Entropy is the degree of randomness and disorder.  As number of gaseous moles in product are higher…

Q: First Law of thermodynamics I. Calculate AU for each of the following cases & identify if the…

A: Exothermic reaction :-        In a reaction the amount of heat released then the reaction is known…

Q: 6. Enthalpy provides a quantitative measure of how much energy is spread out when something happens.…

A: Enthalpy is a state function which measures quantitatively the energy transferred after the reaction…

Q: (Q73) If both the enthalpy change and the entropy change for a certain process have negative values,…

A: We know that ∆G=∆H-T∆S Where ∆G is gibbs energy. ∆H is enthalpy chnagr and ∆S is entropy change  For…

Q: Given Δ H system = -144 kJ and Δ S system = -36.8 J/K for a reaction,determine the lowest…

A: Condition for spontaneous reaction is ΔGsystem < 0 . Formula  ΔGsystem = ΔHsystem - TΔSsystem  0…

Q: A certain reaction has a positive value of enthalpy change. Which of the following statements is/are…

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Q: plant use photosynthesis to produce glucose light energy+ 6CO2 + 6H2O =  C6H12O6 + 6O2 if a leaf…

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Q: combustion of octane (in gasoline) occurs according to the reaction 2 CgH₁8 + 25 0₂ 16 CO₂ +18 H₂O.…

A: Given-> ∆Hf(octane) = -268.8 KJ/mole ∆Hf(CO2) = -394KJ/mole ∆Hf(H2O) = -286 KJ/mole

Q: Br () H Pd on C (a) () NANO, HCI, 0-5 °C () CUCN NO2 KMno, (b) heat Pd(OAc), PPh, (c) -B(OH Na,Co,…

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Q: A 1.72 g sample of the saccharide, C6H1206, shown below is combusted in a constant volume…

A: By the estimate of the enthalpy of reaction by looking at the individual bonds involved. If we know…

Q: The molar entropies of methane and carbon dioxide at 25°C are 186.6 and 213.8 J/mol·K, respectively.…

A: The molar entropy in terms of microstates can be expressed as,…

Q: Which of the following is not a state function? a. density b. heat c. free energy d.  entropy…

A: State functions only depend initial and final state  and not depends on path Examples of state…

Q: Use Hess's Law to calculate the heat of formation of CO(g) given the following information: C(s) +…

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Q: Calculate AHxn for the reaction: 2H,0(1) → 2H2(g) + O2(g) Use the following information: H,0(g) →…

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Q: 63. Calculate ΔH°ΔH° for the process Sb(s)+5/2Cl2(g)⟶SbCl5(s) from the following…

A: The required reaction is: The given reactions are:

Q: Calculate ΔSϴ for the reduction of aluminum oxide by hydrogen gas: Al2O3(s) + 3H2(g) → 2Al(s) +…

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Q: What is the change in internal energy (in kJ/mol) of the given reaction if 2 moles of sulfur dioxide…

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Q: . What is true about the spontaneity of a reaction?     a.When the products have less enthalpy than…

A: In this question, we want to identify correct statement about spontaneity of a reaction. You can see…

Q: Explosive reactions often have a large negative enthalpy change and a large positive entropy change,…

A: In this reaction we get ∆G° is negative so reaction will be favourable. n is the total moles of gas…

Q: 11.Describe the conditions at which the following thermochemical equations are  spontaneous. If you…

A: Chemical Reaction are almost invariably accompanied by energy changes which ordinarily, appear in…

Q: Given the following chemical reaction occurring in a 2.00 L container: A (g) + 2 B(s) ↔ 4 C(g) + 3…

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Q: 1. Iron(II) oxide (FeO) is used in cosmetics and in tattoo inks as a dye. Iron(II) oxide reacts with…

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Q: Propane, major component of LPG, burns according to the reaction, C;Hs2) +10 O22) Calculate the heat…

A: We have to calculate the heat evolved in 55g of propane = -27775 KJ

Q: When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume…

A: Given:  Change in temperature =10oC Total heat capacity = 6.97 kJ/mol qcal = - qrxn

Q: Is the standard free-energy change, ∆G°, always larger than ∆G?

A: solution;   ∆Go not always larger than ∆G,

Q: CaCOg(s) -> CaO(s) +CO2 AH=177.8 kJ/mol What is the change in the internal energy for the reaction…

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Q: The enthalpy of combustion of methane (CH4) is 890 kJ/mol, which is released as heat. Calculate the…

A: Given, One mole of methane is released 890 kJ of heat.

Q: The normal melting point of ethylene glycol, C₂H6 O2, is -12.7 °C. For the process of melting, what…

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Q: How much energy in kJ is released when 124.49 g of nickel react with an excess of phosphorus? 5 Ni…

A: Change in enthalpy ,∆H, is a extensive property of the system,.i.e, it depends on the mass of the…

Q: reaction does not move forward and backward (meaning only move to one direction; could be product…

A: Direction of reaction is determined by the help of Gibbs free energy change (□G) For product favored…

Q: The Space Shuttle uses the following reaction to drive its reusable rocket boosters. H° = -2670.9…

A: We know Gibbs free energy, G° = H° - TS°  Where, H° = enthalpy              T = temperature in…

Q: 20) Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:…

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Q: A sample consisting of 1.00 mol of a monatomic ideal gas at 30 ℃ is compressed reversibly and…

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Q: Consider the decomposition of liquid benzene, C6H61l2, togaseous acetylene, C2H21g2:C6H61l2 ¡ 3…

A: Decomposition reactions are one in which the reactants get splits into one or more than one…

Q: Consider the reaction: 2 H,0(g) → 2H,(g) + 0,(g) If 2.0 moles of H2O(g) are converted to H2(g) and…

A: Step : 1               Calculate the change in internal energy for the reaction.

Q: Pick the substance from each set that would have the largest molar entropy. Set 1 Set 2 CH-(g) or…

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Q: 4. Predict the sign of AS for these processes: a. 2 H,(g) + 0,(g)2 H,0(1) b. H,O(1) → H,0(s) c.…

A: Entropy (S) is a measurement of the randomness or disorder of a system. Higher the disorder in the…

Q: If a process is exothermic and not spontaneous, then what must not be true? a) AG>0 b) AH0 d) AS<0

A: For exothermic process, ΔH &lt; 0 For non spontaneous process, ΔG &gt; 0

Q: For the reaction 2 A(g) → A2(g), Q = -20.00 kJ for the formation of one mole of A2(g) at constant…

A: Given data: The reaction is- 2 A(g) → A2(g), Q = -20.00 kJ  Temperature = 25.00◦C

Q: If the process is exothermic and not spontaneous, then what must be TRUE? O a. AS0 O c. AH=0 O d.…

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Q: Using the data below, calculate the enthalpy for the decomposition of sodium bicarbonate. 2NaHCO3(s)…

A: In this question we have to tell the change in enthalpy of the given reaction.

Q: Determine the AH for the overall reaction based on the three-step thermochemical processes below:…

A: The steps of the reaction given are,

Q: Calculating ΔG under Nonstandard Conditions What is the free energy change for the process shown…

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