Hydrogen peroxide decomposes according to the following reaction: H2O2(l) → H2O(l) + 1/2O2(g)             ΔH = -98.2 kJ Calculate the change in enthalpy, ΔH, when 1.50 g of hydrogen peroxide decomposes. Group of answer choices -2.89 kJ -4.32 kJ

Q: The standard enthalpy change for the following reaction is -496 kJ at 298 K. 2 K(s) + O2(g)…

A: Introduction :  We need tell the enthalpy change for the reaction when reaction get reversed . Given…

Q: When 25.0 mL of 1.0 M H₂SO is added to 50 ml of 1.0 M NaOH at 25 °C in a calorimeter, the…

A: ∆H in kJ can be calculated using formula :  ∆H = -q  Where , q is heat released or absorbed and is…

Q: What is the enthalpy change when 0.1 moles of ethanol undergoes complete combustion? The molar…

A:

Q: Given the thermochemical equations X, + 3 Y, → 2 XY, AH1 = -390 kJ X, +2 Z, → 2 XZ, AH2 = -160 kJ…

A: In-order to find the enthalpy change of the desired reaction, the given reactions has to be written.

Q: Consider the following reactions: 3C(s) +4H,(g)→C;H,(g) AH° =-103.8kJ C(s) +0,(g)→ CO,(g) AH'…

A: Hess’s law- Change in enthalpy for a reaction is independent on path or steps followed by reaction.…

Q: Given the thermochemical expression below: CaO (s) + 3C (s) ----> CaC2 (s) + CO (g)…

A:

Q: When 13.8 mL of 0.870 M lead(I) nitrate reacts with 90.0 mL of 0.777 M sodium chloride, 0.579 kJ of…

A: Number of moles = Molarity x Volume (L)

Q: Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH…

A: This problem is based on Hess's  law of thermodynamics   The Hess law states that the change of…

Q: Using Hess's Law to calculate net reaction enthalpy Dimethyl ether, a useful organic solvent, is…

A:

Q: 25°C, the enthalphy of formation of gaseous nitric acid is -134 KiloJoules per mole. Calculate the…

A: For the given reaction, Enthalpy of formation of nitric acid = -134 KJ/mol Temperature = 25°C = 298K…

Q: Consider the reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), ΔH = –1.37 × 103 kJ When a 2.23 mol…

A:

Q: A 100. mL sample of 0.100 M HC1(ag) solution is added to 100. mL of 0.200 M NH3(ag) in a coffee-cup…

A:

Q: One reaction for producing carbon monoxide and hydrogen is: 3 CH4 (g) + 2 H2O (l) + CO2 (g) ---> 4…

A: The standard enthalpy change for given reaction is +747.5 kJ/mol. And all the required calculation…

Q: Calculate the reaction enthalpy, ΔH, for the following reaction:     CH4(g)+2O2(g)→CO2(g)+2H2O(l)…

A: As per the question, given reactions are mentioned below:

Q: The standard enthalpy change for the following reaction is 1.11x10 kJ at 298 K. 2 BaO(s) 2 Ba(s) +…

A: By Hess's law of constant heat summation: Equation (ii) = -1/2 x equation (i) ∆H2° = -12×∆H1° ∆H2°…

Q: The ΔrH for the oxidation of solid sulfur to SO3 is -396  kJmol−1 and for the oxidation of SO2 to…

A: To solve this problem we will use the given enthalpy of formation to calculate the enthalpy of…

Q: In each of the following cases, determine the sign of DH, state whether the reaction is exothermic…

A: When the molecules react with each other, there would be the formation of new bonds. There will also…

Q: The standard enthalpy change for the following reaction is -104 kJ at 298 K. 3 C(s,graphite) +4…

A:

Q: Use the following information to calculate the amount of heat involved in the complete reaction of…

A: this equation can be simply solved using Hess's law of constant heat summation. By summing up the…

Q: The enthalpy for the formation of 1 mole of NH3(aq) is -80.29 kJ/mol. What is the enthapy for the…

A: The heat of formation of a compound is defined as the heat change accompanying for the formation of…

Q: Determine the enthalpy change for the reaction using the given AH values, X (s) + 6 H₂O (g) --> XO6…

A:

Q: Consider the following reactions :- C(s) + O,(g) → CO,(g) + x kJ 1 CO(g) + O2(g) – CO{(g) + y kJ 2…

A:

Q: Use Hess's Law to calculate the heat of reaction for the following reaction: A + 3B- →3C + 2D AH =…

A:

Q: The standard enthalpy changes for formation of ammonium oxide and iron 3 oxide are 2Al+3/2O^2→Al2O^3…

A: The standard enthalpy of particular reaction can be calculated from the standard enthalpies of the…

Q: The standard enthalpy change for the following reaction is-438 kJ at 298 K. 2 C(s,graphite) + O2(g)…

A: It is given that when 2 moles of solid graphite is reacting with 1 mole of oxygen and 2 moles of…

Q: Using the following reactions: NO (g) + 0.5 O 2 (g) --> NO 2 (g)             ∆H = 50 kJ x    N 2O 4…

A: Determine  the enthalpy change of the given reaction.

Q: The standard enthalpy change for the following reaction is 52.3 kJ at 298 K. 2 C(s,graphite) + 2…

A: The enthalpy shift that happens in a system when a chemical reaction changes one mole of matter…

Q: Use these reactions and standard enthalpies, AH 2 ZbO(s) + 1/2 O2(3)Zb2O3(s) AH" - -120.0 kJ 2…

A:

Q: Silver (Ag, 107.9 g/mol) oxidizes to form Ag2O (231.7 g/mol).  The molar heat of formation (ΔHfo) of…

A: Given (ΔHf ) of silver oxide = –31.05 kJ/mol. Molar mass of Ag = 107.9 g/mol Molar mass of Ag2O =…

Q: Choose the letter of the correct answer. Please show solution. For a reaction, the enthalpy change…

A: Given: The enthalpy change, (∆H0)=-210 KJ=-210×103 J. The entropy change of the reaction, (∆S0)=-170…

Q: Consider the combustion of liquid methanol, ??3?? (?) CH3OH (l) + 3/2 O2 (g) → CO2 (g) + 2 H2O (l)…

A: Given reaction is :  CH3OH (l) + 3/2 O2 (g) → CO2 (g) + 2 H2O (l) Enthalpy change of the reaction in…

Q: The standard reaction enthalpy for the hydrogenation of propene, C3H6, is -124 kJ mol-1. The…

A: The enthalpies given for different reactions can be written with reactions as, 1) C3H6 + H2…

Q: Using the reactions below, determine the enthalpy of the following reaction 1 g S8(s) + 02(g) →…

A: Enthalpy of a chemical reaction can be calculated from the heat of the given reactions.

Q: In a bomb calorimeter containing 800 g of water, 0.8221 g of benzoic acid is burned. During this…

A: mass of benzoic acid burned = 0.8221 g heat of combustion of benzoic acid = - 16.72 KJ/g…

Q: Octane 1C8H182 is a liquid hydrocarbon at room temperature that is a constituent of gasoline.…

A: We have the equation ∆G°=∆H°-T∆S° Where ∆H° is change in enthalpy, ∆G° is change in free energy, T…

Q: Calculate the enthalpy (ΔHo) of reaction (kJ) for the equation as written. If the answer is…

A: Given:

Q: 12) Calcium carbonate decomposes at high temperature to form carbon dioxide and calcium oxide: Caco3…

A: To find the heat of the reaction for the below reaction. CaCO3 → CO2 + CaO Given that:

Q: When 13.8 mL of 0.870 M lead(II) nitrate reacts with 90.0 mL of 0.777 M sodium chloride, 0.279 kJ of…

A: Answer - The correct option is - (c) 23.3 kJ

Q: The reaction that was on the screen when you started and its derivative demonstrate that the…

A: given, the reaction H2O(l)→H2O(g), ΔH =44.0kJ

Q: Use the following information to determine the enthalpy for the reaction shown be CHĄ(g) + H2O(g) →…

A: We have to find enthalpy of reaction.

Q: Consider the two reactions. 2 NH, (g) + 3 N,0(g) → 4 N,(g) + 3 H,O(1) 4 NH, (g) + 30,(g) → 2N,(g) +…

A:

Q: The standard enthalpy change for the following reaction is -224 kJ at 298 K. Hg(l) + Cl2(g) ->…

A:

Q: If you have a reaction that occurs in aqueous solution, and raises the temperature of 15.9 g of…

A: As the reaction is exothermic , it liberates heat  which rises the temperature of water so sign of…

Q: The standard enthalpy change for the following reaction is 2.44×103 kJ at 298 K. 2 BaCO3(s)--->2…

A: Given: 2 BaCO3(s) → 2 Ba(s) + 2 C(s, graphite) + 3 O2(g)     ΔH° = 2.44×103kJ  ----eqn(1)

Q: Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH +…

A: The reactions given are, 1) NH3 (g) + HCl (g) → NH4Cl (s)                                   ΔH1 =…

Q: 1. The standard enthalpy changes for the formation of aluminium oxide and iron (III) oxide are 2…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: The standard enthalpy changes of formation of iron(II) oxide, FeO(s), and aluminum oxide, Al203(s)…

A: The balanced reaction taking place is given as, Given : ΔHof [FeO(s) ] = -266 KJ/mol And ΔHof…

Q: Calculate ΔH°rxn

A:

Q: III WICI a process occurs at constant external pressure. a) What is the sign of w for the system? Is…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: The ΔHo reaction for the oxidation of ammonia 4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g) is -905.2 kJ.…

A: