Calulate ΔH for the following reaction: 2Mg(s)+O2(g)->2MgO(s) when 4.67g of Mg(s) reacts at constant pressure (ΔHreaction=-1338 kJ).

Q: In a constant‑pressure calorimeter, 65.0 mL of 0.350 M Ba(OH)2 was added to 65.0 mL of 0.700 M HCl.…

A: Given:65.0 mL of 0.350 M Ba(OH)265.0 mL of 0.700 M HCl.Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O

Q: Calculate the ΔH for the reaction: 4 NH3 (g) + 5 O2 (g) --> 4 NO (g) + 6 H2O (g) from the following…

A: According to Hess's law, the enthalpy change of a reaction is independent of the number of steps…

Q: Explain how ΔH, heat of reaction is a state function

A: ∆H, heat of reaction is a state function.

Q: What is the ΔE in units joules for a system releasing 428 calories of heat its surroundings and has…

A: a system releasing 428 calories of heat its surroundings and has 1255 J of work done on the system

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HC1(g) AH = –184.6 kJ Reaction 2: 20F2(g)…

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Q: For the reaction I2(g) + Cl2(g) – 2 ICI(g) AG° = -30.3 kJ and AS° = 11.4 J/K at 310 K and 1 atm.…

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Q: Adding 1.56 g of K2SO4 to 6.00 mL of water at 16.2ºC causes the temperature of the solution to drop…

A: Given : Mass of K2SO4 added = 1.56 g Volume of water = 6.00 mL Drop in the temperature of initial…

Q: Given the reactions, X(s)+12O2(g)⟶XO(s) Δ?=−635.1 kJ XCO3(s)⟶XO(s)+CO2(g)…

A: The given problem relates to Hess's law, which states that the amount of heat evolved or absorbed in…

Q: Determine ΔH for the third reaction from the information given. 1/2 N2(g) + O2(g) ↔ NO2(g) ΔH =…

A: The two reactions given are, 1) 1/2 N2 (g) + O2 (g) ↔ NO2 (g)                ΔH = 33.85 KJ2) N2 (g)…

Q: Calculate ΔH(f) for liquid water, knowing that ΔH (f) of H2O (g) is -242 kJ:  H2O(l) -> H2O(g) ΔH…

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Q: Calculate (in kJ/mol) the standard Gibbs free energy change (AGºrxn) for the oxidation of sulfur…

A: The given reaction is  2SO2(g) + O2(g) → 2SO3(g)  ∆Hrxn = -198.4 kJ = 198400 J  ∆Srxn = -187.9 J/K…

Q: Calculate ΔH° in kilojoules for the following reaction, the preparation of the unstable nitrous…

A: Given :

Q: What is the standard enthalpy change for the reaction? 2NH3(g) ----* NzH4(1) + Hz(g) (A) -935…

A: What is the standard enthalpy change for the reaction?

Q: A chemist measures the enthalpy change AH during the following reaction: H,O(1)→H,O(9) AH=44. kJ Use…

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Q: Given the reactions, X(s)+1/2 O2(g)⟶XO(s)   Δ?=−613.7 kJ XCO3(s)⟶XO(s)+CO2(g) Δ?=+148.1 kJ what is…

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Q: Given the reactions, X(s) +02(g) XO(s) ΔΗ -670.5 kJ XCO3(s) XO (s)+CO2(g) ΔΗ +395.3 kJ what is AH…

A: Given that,The enthalpy change of the reaction is

Q: When 50.0 mL of 0.987 M H2SO4 is added to 25.0 mL of 2.00 M NaOH at 25.0 °C in a calorimeter, the…

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Q: Calculate ΔSº for the reaction using the data table provided. 2 KClO3(s) → 2 KCl(s) + 3 O2(g)…

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Q: 1) The three combustion reactions are: C(s, gr) + O>(g) --> CO,(g) AH =-393.50 kJ H,(g) + ½0,(g)…

A: Solution:    The change in enthalpy of formation is the enthalpy change when the formation of one…

Q: The standard heat of formation for Ag2CrO4(s) is -712 kJ/mol at 298 K. Write the formation equation…

A: The equation for the heat of formation reaction can be written as, 2Ag++CrO4-2→ Ag2CrO4 ∆H=-712…

Q: 13.4gof NH4Clis dissolved in 150mLof water in a coffee-cup calorimeter, and the temperature of the…

A: moles of NH4Cl = mass / molar mass of NH4Cl                           = 13.4 g / 53.5 g/mol…

Q: Write the balanced overall equation (as shown) for the following process, calculate ΔHoverall, and…

A: The balanced overall equation, ΔHoverall and the number of each equation with letter of the…

Q: Find the AH for the reaction below, given the following reactions and subsequent AH values: N2H4(1)…

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Q: Make any changes needed in each of the following equationsto make ΔH°ᵣₓₙ equal to ΔH°f for…

A: ∆H˚f is the change in enthalpy (∆H) when 1 mole of the compound is formed from its constituent…

Q: Given the reactions, X(s) + 0,(g) → XO(s) AH = -984.1 kJ XCO,(s) → XO(s) + CO,(g) AH = +434.1 kJ…

A: Hess' law of constant heat summation: The Hess law states that the change of enthalpy in a chemical…

Q: Hydrogen cyanide is a highly poisonous, volatile liquid. Determine the ΔH for the reaction that…

A: Hess's Law of Constant Heat Summation: If a reaction occurs in multiple stages or steps, the total…

Q: ΔHf information provided to calculate ΔH of the reaction (in kJ) for the following:…

A: Given, Ca(OH)2(s) + 2H3AsO4(aq ---> Ca(H2AsO4)2(aq) + 2H2O(l)   Ca(OH)2(s) = -986.6 kJ/mol…

Q: Calculate ΔH per the reaction NO(g) + O(g)-> NO2(g) Data: NO(g) + O(g)-> NO(g) + O2(g)      ΔH=…

A:

Q: When 3.00 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was…

A: The heat of the solution produced when 3.0 g of sodium hydroxide is dissolved in 100 g of water, is…

Q: The standard heat of formation for Ag2CrO4(s) is -712 kJ/mol at 298 K. Write the formation equation…

A: Given, standard heat of formation for Ag2CrO4(s) is -712 kJ/mol. The term "standard heat of…

Q: A student measured qrxn for the reaction of 0.492 g of a metal, X(s)(molar mass = 81.72), with…

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Q: For the following reactions identify if they are exothermic or endothermic.    2NO2 → 2NO + O2 ΔH =…

A: The heat energy shift (∆H) that occurs when reactants become products is known as enthalpy of the…

Q: When 36.1 g of NH3 (MM = 17.03 g/mol) decompose, 171 kJ of energy is absorbed. Calculate AHXN in kJ…

A: Given reaction: 2 NH3 (g) → N2 (g) + 3 H2 (g) Given, the molar mass of NH3 = 17.03 g/mol It is also…

Q: Combustion of C12H22O11(s) (sucrose or "table sugar") produces CO2(g) and H2O(l). When 1.43 g of…

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Q: After determining the ΔH of reactions, explain what does the numerical difference represent, in…

A: Enthalpy change of a reaction, ΔH can be either positive or negative numerically.

Q: Considering the limiting reactant, how much heat is produced at constant pressure if 0.243 g of…

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Q: Calculate the equilibrium constant Kc for a reaction occurring at a temperature of 15 oC, and with…

A: (a) Given: Temperature = 15 C delta G = -45.3 kJ/mol

Q: Lecture Problem 11 Given the synthesis below, fill in the missing product and reagents. For…

A: Nucleophilic reaction is the characteristic reaction of aldehyde and ketone.Here we can see that…

Q: How many moles of isooctane are burned under standard state conditions when ΔH =  -372 kJ?

A: Sol. Change in enthalpy, ΔH = heat released = -372 kJ Standard molar enthalpy of combustion of…

Q: Use ΔH formation information provided to calculate ΔH of the reaction (in kJ) for the following:…

A: In this question, we have to find out the correct answer of given problem by the help of Enthalpy…

Q: Determine ΔH in kJ/mol for the following reaction: 2NO(g) + O2(g) --> 2NO2(g) The standard…

A: Given that:  2NO(g) + O2(g) <......> 2NO2(g)  dH°NO = 90.4 KJ/mol  dH°NO2 = 33.9 KJ/mol

Q: For each reaction equation, calculate the internal energy change, ΔE, of the reaction at 25 ∘C…

A: Enthalpy and energy of the reaction are related as H=E+PV The change in enthalpy can be given as…

Q: Calculate AH for the reaction, C,H,(g) + H,(g) → C,H,(g) Given: (a) 2 C,H,(g) + 5 0,(g) →4 CO,(g) +2…

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Q: Hydrogen

A: ∆H°rxn = [ ∆H°( Product ) ] - [ ∆H°( reactant ) ]  ∆H°rxn = [ ∆H°( H2O2 ) ] - [ ∆H°( H2 ) + ∆H°( O2…

Q: If an equation for a reaction is doubled and then reversed, How is the value of ΔH changed?

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Q: What is ΔH for the following reaction? SiO2(s) + 2 Cl2(g) → SiCl4(l) + O2(g)

A: Jdsj

Q: If for the reaction: 4Fe(s) + 302(g) →→→→2Fe₂O3(s) AHran-1648 kJ/mol rxn, then for the reaction:…

A: The thermochemical equations can be treated as algebraic equation which can be added,  subtracted,…

Q: Determine the ΔH of the following reactions. 1.) CH4 (g) + 2 O2 (g) à CO2 (g) + 2 H2O (l)…

A: Determine the ΔH of the following reactions.