a) Is this reaction exothermic or endothermic? Explain. b) How much heat is released when a 5.00 g sample of benzene is burned in excess oxygen under standard conditions? c) How much heat is released when 100.0 g of water is produced under standard conditions?

Q: Transition State Ea Reaction Coordinate

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Q: O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic O neither If you…

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Q: Which number represents the enthalpy change in the reaction? 2 Reaction Coordinate 90 Potential…

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Q: How much heat (in kJ) is produced by the complete combustion of 52.2 g of CH4? Use 1.01 g/mol for…

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Q: How much heat is released when 2.50 molesof HCl(g) are formed?

A: Reaction involved for the formation of HCl(g) H2(g) + Cl2(g) -------> 2HCl(g)  For this reaction…

Q: 4 Al (s) + 3 02 (g) 2 Al203 (s) ; AH° = -3351 kJ is and therefore heat is by the reaction. a.…

A: The given reaction is : 4Al(s)  +  3O2(g)  →  2Al2O3(s)           ∆H°=-3351 kJ

Q: 1. When a mole of metal oxide decomposes, enthalpy change is positive. What de it tell you about the…

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

Q: A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Solution :        The heat of dissolution is defined as an enthalpy change related to the…

Q: When a firecracker explodes, energy is obviously released. The compounds in the firecracker can be…

A: Given statement,        When a firecracker explodes, energy is released. The compounds in the…

Q: For the reaction given, answer the following questions. S(s) + O2(g)  SO2(g)      ΔH = -296 kJ/mol…

A: As per the reaction: S + O2 ---> SO2 When 1 mole of S burns, then 296 KJ of heat is evolved. When…

Q: Is the reaction of magnesium metal with water exothermic or endothermic? How do you know?

A: A type of reaction in which heat is absorbed is known as endothermic reaction. While a type of…

Q: What can you notice in relation to chemical bonds by changing the potential energy of reactants and…

A: Applying concept of bond energy.

Q: 1. Explain the energy change during a chemical reaction 2. Distinguish between exothermic and…

A: Four questions based on thermodynamics, which are to be accomplished.

Q: When calculating the heat of reaction why did we have to add C calorimeter   specific heat ?

A: A calorimeter is a device used to determine the quantity of heat involved in the chemical or…

Q: The answer to this question is a numerical answer. Please report the numerical answer to 1 decimal…

A: Given:  The volume of HCl is 50.0 mL. The volume of NaOH is 31.8 mL. The molarity of HCl is 0.100 M.…

Q: 45. How much heat is produced by burning 4.00 moles of acetylene under standard state conditions?

A: Combustion is an exothermic reaction.  The balanced chemical equation for the combustion of…

Q: Which does NOT describe an exothermic reaction? a. Heat is released together with the products of…

A: A chemical reaction in which heat is evolved along with products is known as exothermic reaction.…

Q: Heat of formation values for four compounds are given in the table above. a) Sketch an energy…

A: Enthalpy of reaction is equal to the difference between total formation enthalpies of products and…

Q: How many moles of H2 are required to produce -2501 KJ of heat in the following reaction?       Heat…

A: Given Chemical reaction:

Q: Calculate the amount of heat released from combustion of 1 g of wood

A: Please find your solution below : Note : This question requires the values of heat capacity and…

Q: Consider the following equation: 2 KCIO3 --> 2 KCI+ 3 O2 If potassium chloride has a heat of…

A: In a reaction, reactants react to form the products.  Enthalpy is the total energy involved in the…

Q: How much potassium nitrate has to dissolve in water to absorb 117 kJ of heat?

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Q: Which of the statements is true of the energies of the bonds that break and form in an exothermic…

A: Exothermic reactions are the reactions which involves the release in heat after the completion of…

Q: Which of the following statements is correct if a reaction is carried out at constant pressure? O…

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Q: Which of the statements is true of the energies of the bonds that break and form in an endothermic…

A: Bond formation in endothermic reaction

Q: Consider the reaction below then answer the following questions. The molar mass of C3H8 = 16.01…

A: C3H8 (g) + 5 O2 (g) à 3 CO2 (g) + 4 H2O (l)    ∆H = -2220 kJ   The exothermic reaction will always…

Q: Which statement is correct for the characteristics of an endothermic reaction? Select one: a. There…

A: There are two types of reaction are present -  1) Endothermic reaction  2) Exothermic reaction In…

Q: A 8.27 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: ∆H = 45.06kj/mol

Q: Consider the following reaction: 2Cr2O3(s)    4Cr(s) + 3O2(g)  DH = 2279.4 kJ Calculate the…

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Q: Define the terms Exothermic and Endothermic Reactions?

A: The chemical species react in a system to form products. A certain amount of energy is prerequisite…

Q: Write at least two reactions that show enthalpy. State the reactants and the products of the…

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Q: 1. Explain the energy change during a chemical reaction. 2. Distinguish between exothermic and…

A: Three questions about thermodynamics, which are to be accomplished.

Q: Which statement about the reaction illustrated in the diagram is true? (B) (A] (C) (D) O The energy…

A: Which statement is true?

Q: 2

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: 2. What quantity of heat is associated with the synthesis of 35.6 g of NH3 according to the…

A: Nitrogen oxide reacts with water to form ammonia and oxygen. According to the given reaction when…

Q: How much heat is released when 1.4 mol of hydrogen fluoride are produced?

A: During the reaction, the heat might be absorbed or it will be released. The process where heat is…

Q: i don't know how to start this. we are supposed to get the heat of the reaction

A: Given

Q: 12. Consider the following reaction. CH3CH,Br + H2O – CH;CH2OH + HBr (c) Calculate the enthalpy of…

A: The balanced reaction given is, => CH3CH2Br + H2O --------> CH3CH2OH + HBr

Q: If you have an endothermic reaction and you add heat or energy, which way the reaction is shifting?…

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Q: onsider the following reaction.  N2 + 3 H2 -> 2 NH3        ΔH = -92 kJ/mol If 35 g of NH3 are…

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Q: How much heat is produced by combustion of 125 g of methanol under standard state conditions?

A: Given: Mass of methanol(CH3OH) = 125 g ΔH = -764 KJ/mol Molar mass of CH3OH = 32.04 g/mol

Q: The energy released by a reaction is 657 kJ/mol. Is this reaction endothermic or exothermic? Please…

A: Given: Amount of energy released by reaction = 657 KJ/mol.

Q: A balanced chemical reaction that includes the energy change during the reaction is called the…

A: Amount or quantity of heat absorbed or released during a thermodynamic process at a fixed value of…

Q: How much heat is released during the combustion of 7.50 g of methane (molar mass = 16.0 g/mol)?

A: Standard combustion enthalpy of methane = -890.8 kJ/mol 16g of methane release the heat = 890.8 kJ…

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

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Q: The enthalpy of formation of H2O(l) is -285.8 kJ/mol. What is the enthalpy change if 1.62 g H2(g)…

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Q: Define the term Endothermic reaction?

A: Endothermic reaction : A reaction in which heat absorbed is known as endothermic reaction. For…

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.