Using the equations 2 H2 (g) + O2 (g) → 2 H2O (I) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol CaO (s) + H20 (1) → Ca(OH)2 (s) AH° = -64 kJ/mol Determine the enthalpy (in kJ/mol) for the reaction Ca (s) + 2 H20 (1) → Ca(OH)2 (s) + H2 (g).

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

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O₂(g) → 2NiO(s) AH…

A:

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: 23. Use the following information to determine the enthalpy for the reaction shown below. CS2(1) +…

A: C(graphite) + 2S(s) → CS2(l)                        Formation of CS2(l)= ∆H∘(CS2)= 87.9 kJ    CS2(l)…

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

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: There are two questions are given but I'm solving  first one according to the guidelines of bartleby…

Q: ne enthalpy change

A:

Q: The standard enthalpy of formation of CO(g) is –111 kJ/mol [refer to this equation C(s) + 1/202g) →…

A: Interpretation -  To determine the enthalpy (∆Ho) for the reaction which is given as - 2C(s) + O2…

Q: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Given reactions are  1) CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l),…

Q: Calculate AH for the reaction NH3 (g) + 5 02 (g) → 4 NO (g) + 6 H20 (g). from the following data. N2…

A:

Q: Using the equations 2 Sr(s) + O2 (g) – CO2 (g) → C (s) + O2 (g) AH° = 394 kJ/mol 2 Sro (s) AH° =…

A:

Q: Using the equations 2 2 CsHo (l) + 15 O, (g) → 12 CO, (g) + 6 H₂O (g)AH° = -6271 kJ/mol 2 H₂(g) +…

A: The enthalpy for the reaction 6 C (s) + 3 H₂ (g) → C₆H₆ (l) is determined by considering all other…

Q: Using the equations 2 Sr(s) + O2 (g) → 2 SrO (s) AH° = -1184 kJ/mol Sro (s) + CO2 (g) → SrCO3 (s)…

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: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Hess’s law of constant heat summation- Change in enthalpy for a reaction is independent on path or…

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: Calculate AH for the reaction NH3 (g) + CH4 (g) → HCN (g) + 3 H2 (g), from the following data. N2…

A:

Q: The standard enthalpy change for the following reaction is -56.0 kJ at 298 K. Na(s) + 1/2 H₂(g)…

A: Important points needs to be remember for enthalpy change If a given chemical reaction is reversed…

Q: For the chemical reaction H, (g) + F, (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy (in…

A:

Q: Given that: AH°f [Ba(OH)2 (s)] =- 944.7 kJ/mol AH°F [Ba+2 (aq)] = - 537.6 kJ/mol AH°F [OH° (aq)] - -…

A:

Q: Determine the enthalpy of reaction for P4010(s) + 6PCIs(g) - 10POCI3(g) ->> P4(s) + 6Cl₂(g) ->>…

A: we have to calculate the enthalpy of reaction, P4O10 + 6PCl5 ----> 10POCl3       ∆H° = ?

Q: Using the equations Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol CaO (s) + H2O (1) → Ca(OH)2 (s)…

A: Let Ca (s) + 1/2 O2 (g) → CaO (s)  ΔHo = -635 kJ/mol this be equation 1CaO (s) + H2O (l) → Ca(OH)2…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + O2(g) → 2FeO(s) ΔΗ…

A:

Q: Using the equations 2 Fe (s) + 3 CI, (g) → 2 FeCl, (s) AH° = -800.0 kJ/mol Si(s) + 2 CI, (g) → SICI,…

A: The value of ∆H of a thermochemical equation changes with the changes made in chemical equation  If…

Q: Determine the enthalpy of reaction for 2CH4(g) → C2H«(g) + 2H2(g) using the equations: 2C2H6(g) +…

A:

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: The standard enthalpy change for the following reaction is 450 kJ at 298 K Cu(OH)2(s) → Cu(s) +…

A: Given:

Q: Using the equations H₂ (g) + Cl₂ (g) →→ 2 HCI (g) AH = -184.6 kJ/mol -> C (s) + 2 Cl₂ (g) →CCI (g)…

A: Given question is related to determining the molar enthalpy of the given reaction.

Q: Given the following two equations and their respective enthalpies: S (s) + O2(g) → SO2(g) AH =…

A:

Q: Using the data provided below, calculate the standard enthalpy change for the following reaction:…

A:

Q: Using the equations N₂ (g) + O₂ (g) 2 NO (g) AH° = 180.6 kJ/mol N₂ (g) + 3 H₂(g) → 2 NH₂ (g) AH° =…

A: This question is based on the Hess's Law. According to this law, the enthalpy change for a…

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.