Using the following equations, N,04(g) 2NO,(g) AH° =+57.93 kJ 2NO(g) + O,(g)– 2NO,(g) AH° = -113.14 kJ calculate the AH° for the following reaction: 2NO(g) + O2(g) → N20,(g) ΔΗ i kJ

Q: Given the standard enthalpy changes for the following two reactions: (1) Ni(s) +…

A: The given chemical reactions are as follows:

Q: Enter your answer in the provided box. You are given the following data: H;(g) – 2H(g) AH° = 436.4…

A: Given, a) H2(g) ➝ 2H(g)  ∆H° = 436.4 kJ/mol b) Br2(g) ➝ 2Br(g)  ∆H° = 192.5 kJ/mol c) H2(g) + Br2(g)…

Q: Calculate ΔHrxn for the following reaction: BaO(s)+CO2(g)→BaCO3(s) Use the following reactions and…

A: Heat of reaction is defined as difference of energy of product  and energy of Reactant. If heat of…

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: (1) N2(g) + 202(g)→2NO2(g) AH° = 66.4 kJ (2) 2N½0(g)2N2(g) + O2(g) AH° = -164.2 kJ what is the…

A: Given, N2(g)+2O2(g)→2NO2(g) ∆Ho=66.4kJ--------(1)2N2O(g)→2N2(g)+O2(g) ∆Ho=-164.2kJ--------(2)

Q: Determine the enthalpy of reaction for 2CH2(g) → C₂H4(g) + 2H₂(g) using the equations: 2C₂H6(g) +…

A: When any reaction is reversed, then the value of the enthalpy of the reaction remains the same but…

Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

A:

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Al(OH)3(s)→Al,03(s) + 3…

A:

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

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) N₂(g) +202 (g) → 2NO2 (9)…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

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 -112 kJ at 298 K. 2 Na(s) + H2(g)…

A: The standard enthalpy change for this reaction at 298 K has to be determined

Q: A calorimeter contains 35.0 mL of water at 13.0 °C. When 1.80 g of X (a substance with a molar mass…

A: Given,The volume of water = 35.0 mLSo, mass of the water will be = (35.0 mL x 1.0 g/mol) = 35.0 g =…

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

A:

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

A:

Q: The standard enthalpy change for the following reaction is 265 kJ at 298 K. Hg,Cl2(s) →2 Hg(1) +…

A:

Q: Given the data below, H°, for the reaction rxn 3C12 (g) + PH3 (g) → PCI3 (g) + 3HCI (g) is kJ. AH°…

A:

Q: The chemical equation for photosynthesis is as follows: 6 CO2 + 6 H2O → CH1206 + 6 O2 Every year,…

A: Given-> 6CO2(g) + 6H2O (l) -->C6H12O6(s) + 6O2(g) Weight of CO2 = 2.85 ×10^4 kg

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.