CO(g) +2 H2(g) CH3OH(1) AH° =-128.1 kJ

Q: CeH6ln + 15 O2(g)12 CO2(g) + 6 H20() AH = -5.854 x 10 kJ in unknown amount of CEH6() was combusted…

A: The question is based on the concept chemical thermodynamics.   We have been given heat value.   We…

Q: Use the following information to determine the enthalpy for the reaction shown below CS2(1) + 302(g)…

A: Since, there are multiple questions, we are authorized to answer only the first one. If you require…

Q: of iron with oxygen may be surprised

A: a). For 1 mole of Fe2O3 formed ; ∆H will be -0.825 × 10³ kj / mol .

Q: When methanol, CH, OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

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

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 the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

Q: Using the equations 2 CH, (1) + 15 0, (g) → 12 CO, (g) + 6 H,O (g)AH° = -6271 kJ/mol C (s) + O, (g)…

A: Above question will be solved by suing the Hess Law.

Q: Given the AH for the following reactions, P4(s) +6C12(g) →→ 4PC13 (8) AH = -2439 kJ 4PC15(g) → P4(s)…

A:

Q: Determine the standard enthalpy of formation (AH°t) for NO2(g) given the information from the…

A:

Q: Calculate the value of ΔH (in kJ) for the reaction, 2AR3 (g) + Q (s) → A2R4 (g) + QR2 (s)   2AR3…

A:

Q: Calculate the amount of heat transferred when 3.59 g of Mg(s) reacts at constant pressure.

A:

Q: tot] Mn(s) + O2(g) → MnO2(s)         ΔH(tot) = ___________? [1] 2MnO2(s) → 2MnO(s) + O2(g)    ΔH1 =…

A: Determine:- tot  Mns+O2g→MnO2s      ∆Htotal=?         Given that; 1 2MnO2s→2MnOs+O2g  ∆H1=+246 KJ 2…

Q: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s), ΔH = -1652 kJ (d) How much heat is released when 11.40 g Fe and 2.13…

A: In the given question we have to calculate the heat released during the reaction,  First of all, we…

Q: The standard enthalpy change for the following reaction is -763 kJ at 298 K. Ti(s) + 2 Cl2(g)…

A: The enthalpy change for the backward process the equal in magnitude but opposite in sign to the…

Q: The reaction of iron with hydrochloric acid is represented by the following thermochemical equation.…

A: Answer :-  e. 0.397(L) Volume of H2 gas produced at STP = 0.397 L…

Q: Methanol, CH3OH, is a possible fuel for automobiles. Energy is evolved in its combustion with…

A:

Q: (a) Consider the following thermochemical data to: 2CO2(g) → 2 C (s, graphite) + 2 O2 (g) AH° =…

A: The enthalpy change of an reaction is extensive property i.e on changing the stoichiometry of…

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

A:

Q: 2 Calculate the temperature reached when 100 g of water at 18.2°C absorbs 9.45 kJ of heat energy.…

A:

Q: Given the following thermochemical equations, 4NH3(g) + 702(g) → 4NO2(g) + 6H2O(g) 6NO2(g) + 8NH3(g)…

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

Q: Using the equations 2 Sr(s) + O2 (g) → 2 SrO (s) AH° = -1184 kJ/mol CO2 (g) → C (s) + O2 (g) AH° =…

A: The reactions given are, 1) 2)

Q: 2CIF (g) +O2 (g) → Cl20 (g) + F20 (g) 2CIF3 (g) + 202 (g) → Cl20 (g) +3F20 (g) AH°a = 341.4 kJ/mol…

A: The value of dH° for the reaction is to be calculated

Q: Using the equations Sro (s) + CO, (g) → SrCO, (s) AH° = -234 kJ/mol 2 Sr(s) + O, (g) → 2 Sro (s) AH°…

A: Given  SrO(s)  +  CO2(g)   →   SrCO3(s)                     ∆H°   = -234 KJ/mol…

Q: How many kilojoules of heat

A: D)

Q: The addition of 3.15 g of Ba(OH)₂ 8H₂O to a solution of 1.52 g of NH SCN in 100 g of water in a…

A:

Q: Given the following three reactions: C (s) + 2 H2 (g) CH4 (g) AH = -33.1 kJ ------> C (s) + 2 Cl2…

A: Given the following three reactions: C(s) + 2 H₂ (g) ------> CH4 (g)  ∆H= -33.1 kJ C(s) + 2 Cl₂…

Q: What is the final temperature reached by the mixture in the calorimet

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

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: When octane (C8H18, density = 0.699 g/mL) undergoes complete combustion, it provides energy…

A:

Q: I am confused on how to find the enthalpy change with this information. Thank you!

A: Enthalpy of formation of a pure compound will be zero. So the formation enthalpy for oxygen will be…

Q: 7. Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these…

A: (a)The heat combustion value of methanol is determined as follows,

Q: The standard enthalpy change for the following reaction is -576 kJ at 298 K. 2 Na(s) + I2(s) –→ 2…

A: Given,

Q: Pentane is a good fuel that burns well in oxygen. C5H12(1) + 802(g) → 5CO2(g) + 6H2O(1) Calculate…

A: Formula used :-  ∆Hrxn = ∆Hproduct - ∆Hreactant

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: Given the standard enthalpy changes for the following two reactions: (1) Hg(1) + Cl,(g)→HgCl,(s) AH°…

A: The reactions given are,

Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…

A: Exothermic reaction: When heat is evolved by the system i.e. the value of ∆H°rxn is negative.…

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

A:

Q: Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols…

A: To calculate the heat of combustion in kJ/mol. The number of moles of these alcohols should be…

Q: The standard enthalpy change for the following reaction is -425 kJ at 298 K. AH° -425 kJ K(s) +…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g)–2PBO(s) AH°…

A: Consider the given thermochemical equations is as follows; 1 2 Pbs   +  O2g  →  2 PbOs…

Q: How much heat (in kJ) is needed to convert 387 g Fe,03 into pure iron in the presence of excess…

A: Given: The weight of Fe2O3 is 387 g. The given reaction is, 2Fe2O3g+3Cs→4Fel+3CO2g ∆H°=+467.9 kJ

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.