Given the AH°f, calculate the AH°xn for the formation of diamond from graphite. AH°; (C, graphite) = 0 kJ/mol AH°; (C, diamond) = 2 kJ/mol +2 kJ/mol O kJ/mol O -2 kJ/mol

Q: 5.64 The ΔH°f values of the two allotropes of oxygen, O2 andO3, are 0 and 142.2 kJ/mol,…

A: The stable form of oxygen allotrope has to be given,

Q: 11. A process that gains or accepts energy as it takes place is a(n) a. exergonic process b.…

A: A reaction in which free energy is released is called an exergonic reaction. In this Gibbs free…

Q: 0 g each of three metals, A, B and C absord the same amount of heat. The temperature of A increases…

A: Heat capacity is an intrinsic physical property of a substance . It is the measure of the amount of…

Q: Given the reaction: NO2(g) NO(g) + O2(g) (H = +62 Kj), if the temperature is increased, the…

A: Given ;- NO2(g) <-----> NO(g) + O2(g)  H = +62 kJ  statement : if the temperature is…

Q: If 117.4 g of copper at 100.0 ℃ is added to 26.7 grams of water at 25.7 ℃, what is the final…

A: Given , 117.4 g of copper at 100.0 ℃ is added to 26.7 grams of water at 25.7 ℃

Q: 9.54 The phase change between graphite and diamond is dif- ficult to observe directly. Both…

A: Given- C(graphite)+O2->CO2.          ∆H°=-393.51kJ  C(dimond)+O2->CO2.…

Q: Liquid water vaporizes spontaneously at 25ºC. What is the sign of ΔSuniv? Decide on the relative…

A: Liquid water vaporizes spontaneously  As entropy of vapour (gas) is more  than liquid  So sign of…

Q: The overall reaction in a commercial heat pack can be represented as shown below. 4 Fe(s) 30,(g)2…

A:

Q: Calculate q when 0.10 g of ice is cooled from 10.°C to 275°C (cice = 2.087 J/g⋅K).

A: The given data contains, mass = 0.10 g. heat capacity=2.087 J/K.g

Q: When solid NH4SCN is mixed with solid Ba(OH)2 in a closed container, the temperature drops and a gas…

A: Answer

Q: A_ AH corresponds to an, process. O positive, exothermic zero, exothermic positive, endothermic O…

A: Change in enthalpy of the process which is also called heat of process is denoted by ∆H. For…

Q: Calculate q when 0.10 g of ice is cooled from 10.°C to -75°C(cᵢ꜀ₑ=2.087 J/gK).

A:

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

A:

Q: 6.) The diagram below shows the deposition of iodine vapor at room temperature. Which statement is…

A: The ordered system is the indication of low entropy. While less orderliness is the indication of an…

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: Predict the sign for AGº, AH° and ASº for the condensation of gaseous nitrogen at – 201°C? The…

A: Given condensation reaction is:        N2(g) → N2(l) To predict the sign for ∆Go, ∆Ho, ∆So

Q: 8.) Determine AG°rxn using the following information. (assume 298 K) H2(g) + CO(g) → CH2O(g)…

A: This question is related to Gibbs energy formula. Gibbs free energy is a quantity that is used to…

Q: The enthalpy changes, AH, for three reactions are given. H, (g) + 0,®) – H,0) AH = -286 kJ/mol Са2+…

A: The 3 reactions given are, 1) 2) 3)

Q: 4.36)  Predict the signs of ΔH, ΔS, and ΔG of the system for the following processes at 1 atm:  (a)…

A: (a)Given,Normal melting point of ammonia is -77.7 degree Celsius.In this reaction, ammonia melts at…

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: A stainless steel lawn mower blade with a mass of 0.950 kg is being forged. During the process, the…

A: Heat released by steel is equal to heat gain by water.

Q: The sign of AH for the process H20(1) → H20(s) is: O negative, the process is exothermic O positive,…

A: The change in enthaply which is accompanies a chemical reaction, is called he enthalpy of the…

Q: What was the mass of the aluminum?

A:

Q: When determining the energy of a reaction where 0.250 mol of a substance with a ΔHcomb = -2250.0…

A: Given : ΔHcomb = -2250.0 kJ/mol And moles of reactant combusting = 0.250 mol.

Q: (a) Is an endothermic reaction more likely to be sponta-neous at higher temperatures or lower…

A: Since you have posted multiple questions, we will solve only one question for you. If you any…

Q: Which of the following reactions MUST be NONSPONTANEOUS at ALL temperatures? A reaction with AH =…

A: 1) A reaction with ΔH= 100 kJ and ΔS= - 10 J/K is the correct option to get non spontaneous reaction…

Q: Predict the sign of ∆Ssys for each of the following processes: (a) Molten gold solidifies.

A: The measurement of randomness or disorder of the system is called as entropy. It is a state function…

Q: The value of Ke for the reaction A= B is 0.425 at 50.0°C and 0.625 at 100.0°C. Calculate AH° for the…

A: Given reaction  A  <--> B  Kc = 0.425 at T1 = 50°C = 323 K Kc = 0.625 at T2 = 100°C = 373 K

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302(9) → 2 Fe, O,(s)…

A: Using  basic thermochemistry concept we can solve

Q: N2(g)+3H2(g)→2NH3(g) AH°rxn=-92.6 kJ/mol f 2.0 moles of N2 react with 6.0 moles of H2 to form NH3,…

A: Work is calculated by  W= nRT And for ∆U we will use first law of thermodynamics.

Q: Coal can be converted to methane, a chief component of natural gas, according to the following…

A: To solve this problem we have calculate  ∆Gº and Kp for the given  reaction at 25ºC .

Q: 1. The phase change between graphite and diamond is difficult to observe directly. Both substances…

A: According to Hess's law, the standard enthalpy change for a reaction is the sum of the standard…

Q: At one time, a common means of forming small quantities ofoxygen gas in the laboratory was to heat…

A:

Q: The normal melting point of benzene, C6H6, is 5.5 *CFor the process of melting, what is the sign of…

A: a) Since the process melting is converting solid into liquid Hence to convert solid into liquid we…

Q: The following information is given for mercury, Hg, at 1 atm: boiling point = 357 °C AH ap(357 °C) =…

A: The change in enthalpy of a chemical reaction is the total amount of heat released or absorbed in…

Q: A sample of solid (NH4)(NH2CO2) is placed in an evacuated container at 25°C, and it decomposes as…

A: Given data is: NH4NH2CO2(s)⇌2NH3(g)+CO2(g) Kp=2.31×10-4T=25°C=273+25=298K…

Q: What is AHin the equation AG = AH- TAS? O A. The change in entropy between products and reactants in…

A: The equation given is, => ΔG = ΔH - TΔS

Q: Predict the sign of ΔSₛᵧₛ for each process: (a) Gasolinevapors mix with air in a car engine. (b) Hot…

A: Entropy is the measure of randomness.∆Ssys is positive, if the randomness increase and negative if…

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

A:

Q: Determine q

A: q = mc∆T  q is the amount of heat energy absorbed or released m is the mass of substance  c is the…

Q: Is a sparkler burning  process exothermic or endothermic? Indicate the sign of ∆H.

A: Is a sparkler burning  process exothermic or endothermic has to be given,

Q: which of the following is a process with a negative △s? CaCo3---CaO(s) + CO2 (g) H2O (l)----H2O…

A:

Q: If AH = + 32 kJ for a certain process, the process O is exothermic O cannot occur O occurs rapidly…

A:

Q: The AH and AS for the decomposition of sulfur tetrabromide to sulfur and liquid bromine is +115 kJ…

A: The decomposition of sulfur tetrabromide to sulfur and liquid bromine reaction can be written as…

Q: What is the AG° if AH° is +58.7 kJ and AS° is +129 J/K at the temperature of 25°C ? 0 20.2 kJ…

A: Given : ΔHo = 58.7 KJ = 58700 J                       (Since 1 KJ = 1000 J) ΔSo = 129 J/K And…

Q: (b) What is the first law of thermodynamic? Define the Hess law. Given the following data; 2CIF(g) +…

A:

Q: a It is quite common for a solid to change from one structure to another at a temperature below its…

A: The sign of the enthalpy change ∆H depends upon whether the heat is applied to do a process, or heat…

Q: 4.36)  Predict the sign of ΔH, ΔS, and ΔG of the system for the following processes at 1 atm: (a)…

A: (a)Heat energy is added to ammonia to get melt at -60.0 oC so ΔH >0.Disorder is increases in…

Q: The sign of AH for the process NaCI(s) NaCI() is --> O positive, and the process is endothermic. O…

A: Solution, Conversion of NaCl solid to NaCl liquid. More stable salt to less stable compound.