How much energy is released during the formation of 98.7 g of Fe according to the reaction below? Fe203 (s) + 2AI (s) → Al2O3 (s) + 2Fe (s) AHxn = -852 kJ/mol rxn !3! -482 kJ O -753 kJ O-1510 kJ O 4200 kJ O 241 kJ

Q: How much energy is released during the formation of 98.7 g of Fe according to the reaction below?…

A: Given reaction is :  Fe2O3 (s) + 2Al (s) ----> Al2O3 (s) + 2Fe (s) , ΔHrxn = -852 KJ/mole  How…

Q: 3. When potassium chloride reacts with oxygen under the right conditions, potassium chlorate is…

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Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

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Q: 8. The overall reaction in commercial heat packs can be represented as   How much heat is released…

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Q: Charcoal is primarily carbon. Determine the mass of CO, produced by burning enough carbon (in the…

A: Charcoal burns in the air and reacts with O2 to produce CO gas, which further burns with more O2 to…

Q: e the information to answer the following questions. This reaction is... Suppose 41.0 g of NH3…

A: The given data: 2NH3(g) ==> N2(g) + 3H2(g)∆H° = 160 KJ When ∆H° is positive,  it means heat is…

Q: How much heat is produced by the combustion of 4.67g of magnesium (24.30 g/mol)? Mg(s) + 1/2 O2(g)…

A: Here we have to apply mole concept, first we need to find for 1 gram Mg combustion how much energy…

Q: If you have 6.0 moles of ammonia, how much energy in kJ released in the chemical reaction? N2 (g) +…

A: Answer is A) -280 kJ

Q: 8. How much energy is released, when 45.0 g of methane is burned? AH for the reaction is -891…

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Q: The combustion of CH4 releases 890.4 kJ/mol of heat according to the equation: CH4(g) + 2 O2(g) -->…

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Q: Which of the following represents an exothermic chemical reaction? O CO2 (g) breaking into C (s,…

A: Exothermic reaction are those in which heat is released. For exothermic reaction ∆H is negative.

Q: Here is the reaction equation for the combustion of butane, which is an exothermic reaction. 2…

A: Exothermic  reaction that releases energy from the system to its surroundings

Q: How much energy is released in the formation of 612 g of PCl3 (137.32 g/mol), according to the…

A: From the given reaction we can say that when 4 moles of PCl3 is formed, energy released in the…

Q: 3. When carbon disulfide, CS2, forms from its elements, heat is absorbed. How much heat would be…

A: Enthalpy of reaction - it is the heat evolved or absorbed when number of moles of reactants , as…

Q: The heat released when one mole of water is formed from the elements is 1,198 kJ. An experiment was…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: Al2O3(s) + heat → 2Al(s) + ½ O2(g) This reaction is    (endothermic / exothermic ).

A: An EXOTHERMIC thermochemical reaction equation is written as  Reactants ------> products + Heat…

Q: The overall reaction in commercial heat packs can be represented as the reaction below. 4 Fe(s) + 3…

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Q: A)When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following equation, 108…

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Q: d) How many kilojoules of heat are absorbed when 40.5 g of MgO(s) is decomposed into Mg(s) and 02(g)…

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Q: chemist measures the energy change AH during the following reaction: 2 NH3(g) → N₂(g) + 3H₂(g) ΔΗ=…

A: The given data:  2NH3(g) ==> N2(g) + 3H2(g) deltaH° = 160 KJ  When deltaH is positive,  it means…

Q: Methanol, CH3OH (molar mass: 32.042 g/mol), reacts with O2 and can be used as fuel according to the…

A: Methanol reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

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: Iron can be converted to Fe2O3 according to the reaction below. How much heat (in kJ) is required to…

A: Iron can be converted to Fe2O3 according to the given reaction. Amount of heat (in kJ) required to…

Q: Given the reaction: 4 Fe(s) +302(g) → 2 Fe203(s) A H= -1652 kJ, what is the enthalpy change when…

A: The amount of energy released from the reaction is called the enthalpy of the reaction. When the…

Q: If 2C4H10 + 13O2 --> 8CO2 + 1OH2O is exothermic, is energy (heat) a reactant or product?

A: A reaction in which heat is released is called exothermic reaction.

Q: The heat of the solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH₄NO₃ is added…

A: Heat of the solution of ammonium nitrate = 26.2 kJ/mol Mass of ammonium nitrate = 5.368 g Volume of…

Q: How much energy is required to decompose 1970 g of PCl3, according to the reaction below?     4…

A: The enthalpy of reaction when 4 moles of PCl3 decomposes is given as +1207 J. Hence the enthalpy of…

Q: The heat released when one mole of water is formed from the elements is 1,198 kJ. An experiment was…

A: Given :- Specific heat capacity of water = 4.186 J/g.°C Volume of water = 2.0 L Density of water = 1…

Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given Mass of unknown salt = 5.71 g Molar mass = 116.82 g/mol

Q: CaO + H2O ->Ca(OH)2      heat = -64.8kJ/mol, how much heat liberated when 7.15g CaO is dropped into…

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Q: The reaction below is a  exothermic or endothermic reaction. 2SO3(g) + Heat ⇋ 2SO2(g) + O2(g)

A: Endothermic reactions are the reaction in which heat is absorbed and exothermic reaction are the…

Q: How much energy is released during the formation of 98.7 g of Fe according to the reaction below?…

A: In given reaction 2 mole of Fe formed .

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: When a 0.740-g sample of trinitrotoluene (TNT), C,H,N‚O§, is burned in a bomb calorimeter, the…

A: Mass given = 0.740 g  Heat capacity = 3.35 KJ°C-  Initial Temperature = 23.4 °C  Final temperature =…

Q: A 7.37 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

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.