Assuming standard conditions, can the following reaction take place at room temperature? 3Cl2 (g) + 2CH4 (g) → CH3CI (g) + CH₂Cl2 (g) + 3HCl (g) AGO (CH4) = -50.72 kJ/mol AGO (CH₂Cl₂) = -68.85 kJ/mol Solution AGO (CH3C) = -57.37 kJ/mol AG° (HC)= -95.30 kJ/mol

Q: An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. AH°F…

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Q: What is the enthalpy change when 42.0 mL of 0.350 M sulfuric acid reacts with 16.0 mL of 0.100 M…

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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: Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(9) AH=-184.6 kJ %3D Reaction 2: 20F2…

A: ->If ∆H = +ve => reaction is endothermic reaction ->if ∆H = ,-ve => reaction is…

Q: 2. If the temperature rises from 18.7 °C to 25.2 °C when 1.988 g of MgO pellets are added to 199.0…

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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.The combustion of methane gas, the principal constituent of natural gas, is represented by the…

A: Recall the given reaction CH4g + 2 O2g → CO2g + 2 H2Ol     ,  ∆H°=-890.3 kJ We have to find the mass…

Q: Salve for AH for the reaction given the following data. Tell whether the reaction is endothermic or…

A: Exothermic reaction : A chemical reaction is said to be exothermic, if ΔH for the reaction comes out…

Q: What is the Enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 mL…

A: Given : volume of solution = 250.0 mL density of solution = 1.25 g/mL and increase in temperature =…

Q: Given the reaction 2 Cl2 (g) + 2H₂O(g) → 4HCl(g) + O2(g) What is AHO of this reaction? AHO Cl₂ = 0…

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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: Given the following: S8 (g) + O₂(g) → SO₂ (g) 3 8(g) +02 (g) → SO3 (g) The heat of reaction for SO₂…

A: To calculate the heat of reaction for given reaction, we need to modify the given two reactions for…

Q: For the reaction below, AH = -879.6 kJ. 3 N₂O(g) + 2 NH3(g) →→→ 4 N₂(g) + 3 H₂O(g) Given that AH =…

A: 1. The standard enthalpy of the reaction is referred to as all the reactants and products of the…

Q: 3 NaOH(aq) + H3PO4(aq) → Na3PO3(aq) + 3 H2O(l)           ΔH = -173.7 kJ If 31.2 mL of 0.45 M sodium…

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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: Magnesium sulfate is often used in first-aid hot packs, giving off heat when dissolved in water. A…

A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…

Q: Consider these reactions: Reaction 1: H2(g)+Cl2(g)⟶2HCl(g)ΔH=−184.6 kJ  Reaction 2:…

A: Change in enthalpy : ΔH = + 66.4 kJ                                      ΔH = + 66400 J Change in…

Q: 5. What is AH for BaCO3 (s) →→→ BaO (s)+ CO₂ (g) Given reactions 2 Ba (s)+O, (g) → 2 BaO (s) Ba (s)…

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

Q: 1. Consider the following reaction:            2CH3OH(g) --> 2CH4(g)+ O2(g)    ΔH= 252.8 kj  (a)…

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Q: Which of the following reactions is exothermic? ¹/2 N₂(g) + ¹/2O₂(g) + 90.7 kJ ® NO(g) CO(g) + 111…

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Q: Which of the reactions are exothermic? 2 Mg(s) + O₂(g) - 2 MgO(s) + heat - NH₂Cl(s) + heat NH3(g) +…

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Q: 3. The heat of the solution of a solid sample was determined using a coffee cup calorimeter that…

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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: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…

Q: What is the enthalpy change for the reaction MgO(s) + 2HCl(g) →MgCl2(s) + H2O(l)? Enthalpies of…

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Q: 2. Calculate the amount of heat required to raise the temperature of 950.0 mL of a solution from…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 26. Calculate the enthalpy change for the reaction below. NO(g) + O(g) → NO₂(g) Given following…

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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: How much heat is released when an excess of Fe reacts with 48 g of 02 (M = 32 g/mol), according to…

A: 4 Fe (s) + 3 O2(g) → 2 Fe2O3 (s)  ∆H = - 1652 KJ From the above reaction we get that , When 3 mol O2…

Q: If 2.36 g of calcium dichloride dissolves in 84.00 g of water in a kalorimeter at a constant…

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Q: Which of the following reactions is exothermic? O C2H4(g) + O2(g) → 2C(s) + 2H2O(g) AH = 469.2 kJ O…

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Q: ΔΗ- kJ

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Q: Determine the mass of water that is produced when 673 kJ of heat is absorbed in the following…

A: We have to calculate mass of water produced  Given : heat = 673 kJ

Q: In a coffee cup calorimeter with a heat capacity of 21.5 J/ºC, 225 mL of 0.20 M KOH at 22.3 ºC…

A: Given :  Volume of KOH = 225 ml Concentration of KOH = 0.20 M  Volume of HCl = 225 ml Concentration…

Q: Consider the following reaction: 2CH3OH (g) 2CH4 (g) + 02 (g) AH = 252.8 kJ. Atomic weights: C = 12…

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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.