Calculate AH for the reaction below using Hess' law. C2H6(g) → C2H2(g) + H2(g) AH=? C2H2(g) +5/2O2(g) → 2CO2(g) + H2O(1) AH = -1300 kJ AH = -572 kJ 2H2(g) + O2(g) → 2H2O(1) 4CO2(g) + 6H2O(1) AH =-3120 kJ 2C2H6(g) + 702(g) →

Q: Consider the following thermochemical equations (Note: HA is a weak acid) H+(aq) + OH-(aq) → H2O(l)…

A: Choose the equation that shows the correct relationship between their enthalpy changes--

Q: A 0.530-g sample of nonanedioic acid (C9H1604) is burned in a bomb calorimeter and the temperature…

A: To calculate the change in enthalpy (ΔH) for the combustion reaction per mole of nonanedioic acid (C…

Q: Ozone (O3) in the atmosphere can react with nitric oxide (NO): 03 (g) + NO (g) → NO2(g) + 02(g) What…

A: Given: H = -199 kJ/mol S = -4.1 J/K mol T = 25oC

Q: Calculate AH for the reaction 2 Al (s) + 3 Cl2 (g) →2 AICI3 (s), from the following data. 2 Al (s)…

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Q: 6. Which of the following reactions is endothermic?a. H2(g) + 1/2 O2(g) → H2O(g) H = –243 kJ/molb.…

A: An endothermic reaction is a type of chemical reaction that absorbs heat from the surroundings. In…

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

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

Q: Which of the following is paramagnetic? [Zn(H₂0)6]²+ [Cu(H₂0)6]* Onone of these [Co(NH3)6]³+ (strong…

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

Q: How do I solve this

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Q: Rxn A: C(s) + O2(g) → CO2 (g) AH c = -393.5 kJ/mole Rxn B: C8H18(1) + 25/2 O2(g) → 8CO2(g) + 9H2Ou)…

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Q: Payal

A: The objective of this question is to calculate the heat of reaction, qrxn, for the given chemical…

Q: Ammonia will burn in the presence of a platinum catalyst to produce nitric oxide, NO. 4NH3(g) +…

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Q: [tot] 3Li(s) + (1/2)N2(g) → Li3N(s) ΔH(tot) = ___________? [1] 2Li(s) + 2HCl(aq) → 2LiCl(aq) +…

A: A numerical problem based on enthalpy change calculation, which is to be accomplished.

Q: Consider the following reactions: (1) N2(g) + O2(g) → 2NO(g) AH = +180.7 kJ (2) 2NO(g)+ O2(g)…

A: Dear student I have given answer to your question in the image format.

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

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Q: 1. The enthalpy of the reaction N2(g) + 2O2(g) → 2NO2(g) can be calculated using the enthalpies of…

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Q: he heat of reaction f

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Q: Determine the enthalpy change, AHrxm, for the following reaction using the information below.…

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Q: 1. Hydrogen that is stored "stored" in NH3 can be released through the reaction: 2 NH3(g) → N₂(g) +…

A: Answer:- This question is answered by using the simple concept of Hess law of constant heat…

Q: A chemist measures the enthalpy change AH during the following reaction: 2 KCl(s) + 302(g) →2…

A: The enthalpy change (ΔH) of a reaction is the amount of heat absorbed or released by the reaction.…

Q: A chemist measures the enthalpy change AH during the following reaction: 3 N₂(g) + 8 H₂(g) →4 NH3(g)…

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

Q: Which one of the equations below is an endothermic reaction? A) SrO (s) + CO2 (g) → SrCO3 (s)AH° =…

A: A chemical reaction can be classified into two categories: Endothermic reaction Exothermic reaction…

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1)+O2(g)…

A: Atomic mass of Hg = 200.6 g/mol Atomic mass of O = 16 g/mol.

Q: Use the following reactions to calculate the unknown AH. Fe203(s) + 3CO(g) → 2Fe(s) + 3CO2 (g) AH =…

A:

Q: Which of the following process will release the most energy?

A: Cl2 ,Br2,I2 break into ions is endothermic  reaction.  these reaction  required energy .

Q: You are given the following data: H₂(g) → 2H (g) Br₂(g) → 2 Br (g) 2HBr(g) → H₂(g) + Br₂ (g) kJ mol…

A: The four chemical reactions are given as follows:...(i)...(ii)...(iii)...(iv)The standard enthalpy…

Q: The reaction 180 kJ + N2 (g) + O2 (g) → 2NO is __________, and therefore heat is __________ by the…

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Q: Based on the following reactions: Rxn A: C{s) + O2(g) → CO2 (g) AHc = -393.5 kJ/mole Rxn B: C8H18()…

A: When one mole of a substance is completely burnt in the presence of oxygen (with all of the…

Q: 16. Given the following set of reaction data, C(s) + O2(8) → CO,(8) 2CO(g) +O2(g) 2H2 (8) + O2(g) AH…

A: C(s) +O2 ---> CO2               ∆H = -393.5 kj/mol  2CO + O2 --> 2CO2             ∆H = -566.0…

Q: Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,479.0…

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Q: Using the reaction given below, how much energy is produced during the reaction of 72.5 g Cl₂ and…

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Q: Use Hess's Law and the given data to calculate AH for the reaction: N.O(g) + NO:(g) 3NO(g) N2(g) +…

A: Given,

Q: . The enthalpy change for the reaction: H+(aq) + OH-(aq) → H2O (l) ΔH rxn =-57.6 kJ/mol. If 161.4 mL…

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Q: For which one of the following reactions is the value of AH°rxn equal to AHF for the product? 2H2…

A: Given:The reactions,2H2(g) + O2(g) → 2H2O(l)2H2(g) + O2(g) → 2H2O(g)N2(g) + O2(g) → 2NO(g)H2O(l) + ½…

Q: Which of the following represents an endothermic reaction? CH4 (g) + 202 (g) → CO2 (g) + 2H2O (g) +…

A: An endothermic reaction is a chemical reaction where the reactants absorb heat from surrounding and…

Q: P3(g) S(s) + O2(g) → SO2(g) A;H°;(SO2,g) = -297kJ/mol 2 SO3(g) → 2 SO2(g) + O2(g) AH°2 = 198KJ/mol D…

A: We have ∆H value of two reaction and calculate for other equation so we have to do experiment with…

Q: Consider the following thermochemical equations (Note: HA is a weak acid) H+(aq) + OH-(aq) → H2O(l)…

A:

Q: Consider these reactions: AH = -184.6 kJ Reaction 1: H₂(g) + Cl₂ (g) → 2HCl(g) Reaction 2:20F2 (g)…

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Q: Ba(OH)2 8H20(s) + 2NH4NO3(aq) → calorimeter containing 200.0 mL of 0.01 M NH4NO3, changing the…

A: 1.) To calculate the Enthalpy change of reaction , formula used is : ∆Hrxn = - q / n  where , q =…

Q: How much is the enthalpy change when 9.66 g of oxygen gas reacts with excess sulfur? Są (s) + 12 O2…

A: Sulfur reacts with oxygen to form sulfur trioxide. The equation for the balanced chemical reaction…

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.