Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g)2NO2(g) AH° = 66.4 kJ %3D (2) 2N20(g)→2N2(g) + O2(g) AH° = -164.2 kJ %3D what is the standard enthalpy change for the reaction: (3) 2N20(g) + 302(g)- >4NO2(g) AH° = ? kJ

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the molar enthalpy…

A: The balanced Chemical equation given in the question - Ca(s) + ½O₂(g) → CaO(s), ∆H° =-635 kJ/mol…

Q: 5 grams of an unknown compound was dissolved in 75 ml of water with an initial temperature of 22.5ᵒC…

A: Given: Weight of water = 75 ml = 75 grams Initial temperature (T1) = 22.5°C Final temperature (T2) =…

Q: Given the standard enthalpy changes for the following two reactions: (1) Hg(1) + Cl½(g)–→HgCl½(s)…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: The standard enthalpy change for this reaction is -36.3 kJ/mol at 298 K. 1/2 H2(g) + 1/2…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: The 2 reactions given are (1) 4C(s) + 5H2(g) ------> C4H10(g)...... ΔH° = -125.6 kJ(2) C2H2(g)…

Q: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the…

A: Answer:- this question is answered by using the simple concept of Hess law of constant summation of…

Q: Ethane is flamed off in abundance from oil wells, because it is unreactive and difficult to use…

A: Given:

Q: When 50 mL of 0.400 M aqueous hydrochloric acid (HC1; Molar mass: 36.5 g'mol) is mixed with 50 mL of…

A: Given : Concentration of NaOH = 0.400 M Concentration of HCl = 0.400 M Volume of NaOH solution =…

Q: Calculate the standard enthalpy change in kJ for the given reaction. CH4 (g) + N2 (g) --> HCN (g) +…

A: The chemical reaction :  CH4(g) + N2(g) ---> HCN(g) + NH3(g)  Enthalpy of formation of : CH4(g) =…

Q: Calculate the standard enthalpy change for the reaction: 2C3H18(1) + 1702(g) ® 16CO(g) + 18H,O(1)…

A: When a thermochemical equation is reversed then its ∆H value chages its sign. When a thermochemical…

Q: what is the change in the enthalpy in kj/kg for the complete combustion of 39.0 g of fructose,…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g) C¾H10(g) AH°…

A: The enthalpy change accompanying a chemical reaction during the transformation of 1 mol reactants to…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + 2H2(g) ->…

A: Recall the given equations with value of standard enthalpy chages 2Cs + 2H2g → C2H4g  ,∆H°=52.3 kJ…

Q: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the…

A: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) → HCN (g) +3H2 (g) from the…

Q: In a calorimeter, 1.80 g of NH&NO%0) (80.04 gmol') is mixed with 74.0 g of water at an initial…

A: Given data,Mass of NH4NO3=1.80gMass of water=74.0gInitial temperature=25oCFinal…

Q: The standard enthalpy change of combustion [to CO2(g) and H2O()] at 25°C of the organic solid…

A: The standard enthalpy change of a reaction is given by,

Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

A:

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: When 150 mL of 1.00 M NaOH is added to 100 mL of 1.30 M HCl in an insulated calorimeter, the…

A: To calculate the enthalpy change for the neutralization reaction, the following quantities are…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: • The required thermochemical equation is,  2C2H4(g)+ H2(g) → C4H10(g) ; ∆H° = ?    • The given…

Q: When glucose (C6H12O6) is combusted, it produces CO2 (g) and H2O (l). What is the enthalpy for the…

A: The change in the enthalpy of a reaction when the reactant is converted into product under standard…

Q: For the chemical reaction Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol. %3D What is the enthalpy…

A: ⊙ Enthalpy is an additive in nature.Ca(s)+12O2(g)→CaO(s), △H°=-635 kJ/mol—Iwe need to find enthalpy…

Q: Calculate the standard reaction enthalpy for the following reaction in KJ*mol. CH4(g) + H2O(g) -->…

A: Hess's law states that enthalpy change of reaction is independent of initial and final states. If…

Q: Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction   2…

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

Q: Dissolving 3.0g of CaCl2 in 150.0g of water in a calorimeter at 22.4oC causes the temperature to…

A: Given,  Mass of CaCl2 = 3 g  Molar mass of CaCl2 = 110.98 g/mol Mass of Water, m = 150 g  Initial…

Q: If 0.315 moles of hexane (C6H14) are burned in a bomb calorimeter containing 5.65 liters of water,…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: When 15.0 mL of 3.00 M NaOH was mixed in a calorimeter with 13.0 mL of 3.00 M HCl, both initially at…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g) ->…

A: 4C(s)  +  5H2(g)   ---->   C4H10(g)         ΔH° = -125.6 kJ C2H2(g)   ---->    2C(s)   +…

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: Hydrobromic acid (HBr) is a commonly used acid for adding bromine to organic compounds. As bromine…

A:

Q: The combustion of 1.00 mol of glucose (C6H12O6) liberates 2820 kJ of heat. If 1.83 g of glucose is…

A: Concept is based on calorimetry:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A:

Q: A sample of 17.1g of solid with molar mass 71.9g/mol is dissolved in 331g of water initially at…

A: Given: Mass of water= 331 g Tf= 26.8°C Ti= 22.5°C

Q: the standard enthalpy of combustion of octane, -5,430kj/mol, applies to the following reaction…

A: C8H18 + 252O2   →8CO2 +  9H2O                 ∆H°=-5,430KJ/mola) 1 mole of combustion ocatne , takes…

Q: SiO2(s) + 4 HF(aq) → SiF4(g) + 2 H2O(l)        ∆Horxn = 4.60 kJ ∆Hof, kJ/mol: ???         -320.1…

A: Introduction Whenever a particular reaction moves in th forward direction, this means the reaction…

Q: Calculate the change of enthalpy for the reaction CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g) from the…

A: Calculate:- CH4 (g) + NH3 (g) --> HCN (g) +3H2 (g)  Given:- Reaction 1: N2 (g) + 3H2 (g) -->…

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: For the chemical reaction H2 (g) + F2 (g) – 2 HF (g) AH° = -79.2 kJ/mol. %3D What is the enthalpy…

A: The given enthalpy of the reaction is -79.2 kJ/mol for the reaction: H2 (g) + F2 (g) → 2HF (g)

Q: When 25.0 mL of 1.0 M H2SO4 is added to 50.0 mL of 1.0M NaOH at 25 °C in a calorimeter, the…

A: Given that 25.0 mL of 1.0 M of H2SO4 is added with 50 mL of 1.0 M of NaOH solution at 25°C Recall…

Q: Use the following thjt Fermentation of fruits and grains converts glucose to ethanol and carbon…

A: Given, Fermentation of fruits and grains converts glucose to ethanol and carbon dioxide. The…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + 2H2(g) C2H4(g) AH°…

A:

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the molar enthalpy…

A:

Q: Calculate the enthalpy of reaction for the combustion of 9.25 g of butane, C4H10, using the…

A: Given data  - Enthalpy of formation - CO2(g) = -394 kJ/mol; H2O(l) = - 286 kJ/mol; C4H10(g) = -484…

Q: 2 N2(g) + O2(g) 2 N2O(g) G° = 203.1 kJ and S° = -148.5 J/K at 262 K and 1 atm. This reaction is…

A:

Q: 1 If the standard enthalpy of cembustion of gaseous cyclopropane, C3H6, is -2091.2 kJ mol- at 25 C,…

A: The negative enthalpy of formation means the formation of the compound is spontaneous. The enthalpy…

Q: Given the standard enthalpy changes for the following two reactions: (1) Sn(s) + Cl½(g}→SnCl½(s) AH°…

A: Enthalpy (H) is a state function. Hess's Law of constant heat summation: If a chemical reaction…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(9) C4H10(g) AH°…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: （1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g)     ΔHrxn = +254.3 kJ What will be the…

A: 2A (g) + 3 B (g) → 2 C (g) ΔHrxn = +254.3 kJ Moles of B = 0.471 moles Enthalpy Change = ?

Q: The enthalpy of reaction for the combustion of C to CO2 is -393.5 kJ/mol C, and the enthalpy for the…

A: The reactions given are, 1) C (s) + O2 (g) ------> CO2 (g)                            ΔH = -393.5…