P4(s) + 6Cl2(g) → 4PCl3(g) -1225.6 II. P4(s) + 5O2(g) → P4O10(s) -2967.3 III. PCl3(g) + Cl2(g) → PCl5(g) -84.2

Q: Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon…

A: According to Hess’s law of constant heat summation, the total enthalpy change for a reaction is the…

Q: an alternative to combustion, coal gas can undergo a process called methanation.  3 H2(g)  +  CO(g)…

A: Hess's law states that regardless of multiple stages or steps of a reaction, the total enthalpy…

Q: Determine the enthalpy change for the decomposition of calcium carbonate CaCO3(s) → CaO(s) + CO2(g)…

A: We have to determine the enthalpy change for the decomposition of calcium carbonateCaCO3(s) → CaO(s)…

Q: Using Hess's law, calculate ΔH for the reaction: 2C (s) + H2 (g) -> C2H2 (g) reaction 1 C2H2 (g) +…

A: Given: The different chemical reaction is calculated as follows: C2H2 (g) + 3O2 (g) ------------>…

Q: Elemental iron is used in heat packs and the reaction can be represented as: 4 Fe(s) +3 O2(g) → 2…

A: When enthalpy is negative that means reaction is exothermic reaction

Q: Calculate the enthalpy change for the reaction C2H2(g) + 2H2(g) → C2H6(g)     ΔrH = ? from the…

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

Q: The standard enthalpy change for the following reaction is -359 kJ at 298 K. Pb(s) +…

A: The objective of the question is to find the standard enthalpy change for the reverse reaction of…

Q: Given the values of ΔHo for the two reactions below, find the ΔHo in kJ for the reaction:  IF5…

A: (1) IF (g) + F2 (g)→→ IF3 (g) ΔHo = -390 kJ (2) IF (g) + 2F2 (g) →→ IF5 (g) ΔHo = -745 kJ To…

Q: Top fuel dragsters and funny cars burn nitromethane (CH3NO2) as fuel according to the following…

A: The objective of this question is to calculate the standard enthalpy of formation, ΔfH°, for…

Q: From the following enthalpies of reaction find ΔHrxn for 2 HCl(g) + F2(g) ---> 2 HF(l) + Cl2(g):  4…

A: Given, 4 HCl(g) + O2(g) ---> 2 H2O(l) + 2 Cl2(g); ΔH = -148.4 kJ/mol1/2 H2(g) + 1/2 F2(g) --->…

Q: 5. Given the following equations and AH values, determine the heat of reaction (kJ) at 298 K for the…

A: Hess's law is defined as the law which states that the total amount of heat absorbed or released for…

Q: reactions

A: Dear student I have given answer to your question in the image format.

Q: Given the following data: SrO(s) + CO2(g) → SrCO3(s) ΔH = -234 kJ 2Sr(s) + O2(g) → 2SrO(s) ΔH =…

A: Given:

Q: Use Equations a and b to determine ΔH for the following reaction.2CO(g) + 2NO(g) → 2C O 2 (g) + N 2…

A: The main equation or primary equation can be obtained by inverting equation (b) and then adding it…

Q: The standard enthalpy change for the following reaction is -1.55×103 kJ at 298 K. 2 Fe(s) + 10…

A: Standard enthalpy change for the given chemical reaction

Q: The student transferred 50.0 mL 1.00 M HCl into a coffee-cup calorimeter, which had a temperature of…

A: In this question we have to calculate the heat of Reaction by the given as shown above in the…

Q: Suppose 23.00 g ammonium chloride (53.491 g/mol) dissolves in water in a calorimeter to form 100.00…

A: Given,Mass of ammonium chloride ( NH4Cl ) =23.00 gMolar mass of ammonium chloride ( NH4Cl ) =53.491…

Q: Calculate ΔH for the reaction; 4NH3(g) + 5O2 (g) => 4NO (g) + 6H2O (g) , from the following data.

A: 2N2 (g) + 2O2 (g) => 4NO(g)   ........equation(1) 6H2 (g) + 3O2 (g) => 6H2O(g)…

Q: In the following reaction, how many moles of CH₃OH are required to produce -6.696 × 10³ kJ of heat?…

A: The reaction given is   2 CH₃OH (l) + 3 O₂ (g) → 2 CO₂ (g) + 4 H₂O(g)…

Q: A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with molar mass of…

A: Given :  Mass of X = 2.20 g  Volume of water = 16.0 mL  Heat capacity (C) = 4.18  ∆T = 25.5 - 14.5 =…

Q: 6 6. Find AH for the following reaction: Fe2O3 (s) + 3 CO (g) → 2 Fe (s) + 3 CO₂ (g) Use these…

A: 6) Given, a) 4Fe(s) + 3O2(g) ----> 2Fe2O3(s)  ∆H = -1648 kJ b) CO(g) + 1/2O2(g) ----> CO2(g)…

Q: Which of the following reactions is exothermic? ¹/2 N₂(g) + ¹/2O₂(g) + 90.7 kJ ® NO(g) CO(g) + 111…

A:

Q: Calculate the quantity of energy transferred (q), in kJ, by the combustion of 177 mL of acetone…

A:

Q: N2(g) + O2(g) + Cl2(g) ---------> 2 NOCl(g)        ΔH° = 103  kJ What is the standard enthalpy…

A: The answer to the following question is- Given  The reaction : Equation 1) N2(g) + O2(g) + Cl2(g)…

Q: The reaction written below has a ΔH of +2,971 kJ          6CO2(g) + 6H2O(g) --> C6H12O6(g) +6O2(g)…

A:

Q: Given the following decomposition reaction 2H2O2 (l)---> 2H2O(l) + O2 (g) ΔH = –196.1 kJ A. How…

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

Q: Calculate ΔHrxn for the reaction: 7 C (s) + 8 H2 (g) → C7H16 (g) The following reactions and…

A: Given steps reactions are : Reaction A: C7H16 (g) + 11O2 (g) → 7CO2 (g) + 8H2O (g),  ΔH1 = - 4817 kJ…

Q: Calculate ΔΗ°rxn for the combustion of carbon monoxide, producing CO2 in KJ.…

A: The heat of a reaction can be calculated by knowing the standard enthalpies of formation of…

Q: When 25.0 mL of 1.00 M H2SO4 is added to 50.0 mL of 1.00 M NaOH in a coffee-cup calorimeter at 25°C,…

A: Given: Density= 1.00 g/mL The volume of H2SO4= 25.0 mL The volume of NaOH= 50.0 mL The concentration…

Q: Use the information provided to determine ΔH°rxn for the following reaction: ΔH°f (kJ/mol) 2…

A:

Q: of 1.00 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H20 and the…

A: Rise in temperature can be calculated as follows

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.