Given: 2NH3(g) + 3N20(g) → 4N2(g) + 3H20(1) ....AH1 = -1010 kJ 4NH3(g) + 302(g) → 2N2(g) + 6H2O(1) .....AH2 = -1531 kJ The enthalpy change for the reaction: N2 + 1/202 → N20(g) is: - 510.3 kJ + 81.5 kJ - 815.0 kJ O- 303.3 kJ O+ 207.0 kJ

Q: Given the following equation...      3Al(s) + 3NH4ClO4(g)  →  Al2O3(s) + AlCl3(s) + 3NO(g) +…

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

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Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A: Applying unitary method calculation with the help of chemical reaction.

Q: their enthalpy changes,                         N2 (g)   +   O2 (g)    -->    2 NO (g)…

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Q: Consider the following chemical reaction which produces HCI from its constituent elements: H2 (g) +…

A: The correct option with explanation is provided in the next step:

Q: Use reactions A and B to determine the change in enthalpy (kJ) for reaction C. Do not type units…

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Q: Calculate the standard enthalpy for the reaction: 4NH:(g) + 5O:(g) → 4NO(g) + 6H;O(g), through:…

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Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: Given reactions: A) H₂ (g) + F₂ (g) → 2 HF (g) B) Ca (s) + ½ O₂ (g) → CaO (s) C) 2 CH₃OH (l) +…

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

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Q: (b) Hydrogen sulfide, H2S, is formed from the following reaction: H2(g) + Sa(s) → H2S(g) Determine…

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Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 502(g) - 4NO(g) + 6H2O(g), given the…

A: Enthalpy change of a reaction is an extensive property, it depends on stoichiometry of the chemical…

Q: Pentane (C5H12)(C5H12) is a component of gasoline that burns according to the following balanced…

A: We have C5H12(l)+8O2(g)→5CO2(g)+6H2O(g) The standard enthalpy of formation of liquid pentane is…

Q: The standard enthalpy change for the following reaction is -731 kJ at 298 K. 2 N2(g) + 4 H2(g) + 3…

A: Rule : on dividing the reaction with any constant, the value of enthalpy change also gets divided by…

Q: During an experiment, 25 g of 0.32 M Ca(NO3)2 at 42°C is added to 103 g of 0.82 M HNO3 at 37°C in a…

A: 25 g of 0.32 M Ca(NO3)2 at 42◦ C are mixed with 103 g of 0.82 M HNO3 at 37◦ C . The increase in…

Q: Given that: A(s) + B2(g) – AB2(g) AH = -242.3 kJ/mol A(s) + 3/2 B2(g) →AB3(g) AH = -319.1 kJ/mol…

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Q: When 1.42 g of iron reacts with 1.80 g of chlorine, 3.22 g of iron(II) chloride (FeCl2, molar mass =…

A: Iron reacts with chlorine to form iron(II) chloride. When 3.22 g of  is formed, 6.8 kJ of heat is…

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.