calculate the heat of formation, AH°f , of P4O10.

Q: How much energy is released during the formation of 98.7 g of Fe according to the reaction below?…

A: Given reaction is :  Fe2O3 (s) + 2Al (s) ----> Al2O3 (s) + 2Fe (s) , ΔHrxn = -852 KJ/mole  How…

Q: Suppose that the reaction of 2.172 moles consumes 3.21 kJ of heat. What is the molar enthalpy of the…

A: The answer to the following question is :

Q: Give the mathematical expression of enthalpy.

A: Enthalpy: it is the total amount of heat in a particular system. That is the amount energy absorbed…

Q: What is the enthalpy change for the following process? N₂(g) + 2H₂(g) → N₂H₂(1) AH = ??? kJ/mol…

A: Here we are required to find the Enthalpy change for the following reaction

Q: ne enthalpy change

A:

Q: Determine the amount of heat absorbed by a solution in which 485.0 g of NH,NO3is dissolved in water.…

A: enthalpy change given in the question(+25.7kj/mol) is the amount of heat absorbed by the solution…

Q: I need the third sub part

A:

Q: When 3 moles of C is formed, what is the change in enthalpy? 3A + 6B + 5 kJ → 2C

A: Answer given below

Q: What is the enthalpy change when 189 g of NH3 are produced? The standard enthalpy of formation of…

A: Standard enthalpy of formation :- The enthalpy change accompanied the process of formation of one…

Q: A student performed the procedure described in the lab manual using 48.9 mL of 1.0 M HCl and 49.9 mL…

A: Given, Acid taken: 48.9 mL of 1.0 M HCl Base taken: 49.9 mL of 1.0 M NaOH Temperature change: (24.7…

Q: 10.5 g of solid ammonium nitrate are dissolved into a 100.0 g sample of water. The standard enthalpy…

A: Ammonium nitrate is a solid salt it can dissolve in the water .then it can ionise as ions  and AC as…

Q: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

A: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

Q: Write the chemical equation for the enthalpy of formation reaction for BaCO3 (s).

A: The formation of compounds from its atoms in their stable sates at standard pressure and temperature…

Q: Using standard heats of formation from Appendix C of your text, calculate the standard enthalpy…

A: We are required to calculate the standard enthalpy change for all the given reaction and to predict…

Q: How much did our sodium-in-water demonstration raise the temperature of water in the dessicator jar?…

A: The objective of the question is to find out how much the sodium-in-water demonstration raised the…

Q: 6.00 g of a water soluble salt was dissolved in 75.0mL of water. The initial temperature of the…

A:

Q: D4, is used Calculate 10, from 25 perature of heat lorate is

A: Heat(Q) = mass(m) • specific heat capacity (C) • ( T2 - T1 )  Where : specific heat capacity =…

Q: Use reaction stoichiometry to calculate enthalpy change. The following reaction is exothermic. 2…

A: Basic Rule for find the Enthalpy change in new reaction. (1)  If we multiply by any number in a…

Q: Consider the formation of molecular hydrogen H₂ from hydrogen atoms: H(g) + H(g) → H₂(g). Indicate…

A: Endothermic :  The reaction in which heat is absorbed by the reaction to break bonds or to go…

Q: Using values from Appendix C in your textbook, calculate the standard enthalpy change when gaseous…

A:

Q: A student performed the procedure described in the lab manual using 49.9 mL of 1.0 M HCI and 49.3 mL…

A: Molarity of HCl = 1.0 MVolume of HCl: 49.9 mLMolarity of NaOH = 1.0 MVolume of NaOH = 49.3 mLInitial…

Q: Based on the data below, what is the reaction enthalpy for the formation of anhydrous aluminum…

A:

Q: Question 13 The enthalpy of atomization is the enthalpy change required for the separation of all…

A:

Q: 11. Consider the following reaction. CH;CH3 + O2- Co, + H,0 a) Calculate the enthalpy of the…

A: Introduction: We have to calculate the enthalpy of reaction. Since, data is not given so, we can…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 111. kJ during a…

A: Given :  energy of a mixture of gaseous reactants decreases by 111 kJ  185 kJ of work is done on…

Q: (a) Consider the hypothetical element X. XO reacts with hydrogen gas to form XH;OH. Calculate the…

A: Here we have to find out the enthalpy of the reaction of XO with the hydrogen gas to form XH3OH.  XO…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 173. kJ during a…

A: The change in the energy of the gas mixture is = 173. kJ The work done on the gas mixture is = 82.…

Q: HCl + NaOH --> H2O + NaCl how many grams of water were produced if the reaction above took place in…

A: The balanced reaction given is, => NaOH + HCl → NaCl + H2O                    ΔH = -58 KJ/mol =…

Q: The following reaction is endothermic. KCIO4(s) K(s) + 1/2 Cl₂(g) + 2 0₂(g) AH(1) = 433 kJ Calculate…

A: Recall the given reaction,                         KClO4 s  →  K s  +  1/2 Cl2 g  +  2 O2 gThis is…

Q: A common technique for forming metal electrodes on electronic devices is evaporation in a vacuum. In…

A: Given Data: The enthalpy of vaporization (ΔHvap) for gold = 310.9 kJ/mol given mass of  liquid gold…

Q: A sample of 35.41 g of Cus at 96.73 degrees celcius was added to a calorimeter containing 148.3 g of…

A: Given:…

Q: Determine the enthalpy (in kJ/mol) for the reaction 3 SiCl₄ (s) + 4 Fe (s) → 4 FeCl₃ (s) + 3 Si (s)…

A: To solve this we have to do some  mathematical operations with the given  two equations to get the…

Q: Do the follow reactions depict Heat of Formation Reactions? If so, mark the reaction as YES, if it…

A:

Q: Combustion reactions involve reacting a substance with oxygen When compounds containing carbon and…

A: The reaction taking place is given as, => C2H2 (g) + 2 H2 (g) ------> C2H6 (g) Given : Heat of…

Q: What reaction corresponds to the heat of formation of solid Mg(NO3)2

A: The heat of formation: When one mole of the substance is formed by its constituent elements in its…

Q: According to the following reaction, how many grams of hydrogen would be needed to produce 5.450 x…

A: In this question, we want to determine the mass of Hydrogen gas in grams unit.  You can see details…

Q: A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with 22.4 mL of 6.45 M hydrochloric g…

A:

Q: 1. 25 g of sodium (Na) is put into 200 mL of water. The reaction between the two produces sodium…

A: Enthalpy change calculated As heat chage(q) of the system.

Q: In an industrial process to produce ammonia (NH3); nitrogen, N2, reacts with hydrogen, H2, the…

A: Ammonia can be produced in an industry with the help of nitrogen and hydrogen gas, and this process…

Q: When O.376 g of sodium metal is added to an excess of hydrochloric acid, 3910 J of heat are…

A:

Q: The standard enthalpy of formation (AH) is the enthalpy change that occurs when exactly 1 mol of a…

A: As we know enthalpy of formation of is defined as change in enthalpy associated with the formation…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.