Using the equations 2 Sr(s) + O2 (g) → 2 SrO (s) AH° = -1184 kJ/mol CO2 (g) → C (s) + O2 (g) AH° = 394 kJ/mol

Q: please explain to understand the process!!! Given the following information: PCI3(1) + Cl2(g) →…

A: delta H is a extensive property....

Q: 5. Given the following data calculate AH for the reaction: NO (g) + 0 (g) → NO2 (g) Data 202(g) →…

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

Q: 1.30 kg of an unknown substance was heated up using 7,198 cal energy from 46.8 degree celsius to…

A: Given: Mass of the substance, m=1.30 kg=1.30 x 1000=1300 g Heat provided,q =7,198 cal =7198 x 4.184…

Q: Ethanol (C2H5OH) is used as a base for many fuels. Assume it undergoes complete combustion. How much…

A: The complete combustion reaction for ethanol is given as: C2H5OH(l) + 3O2(g) ----> 2CO2(g) +…

Q: 4. If the heat of formation of sodium chloride is -411 kJ/mol, then the heat of reaction for 0.750…

A: heat of formation of sodium chloride is -411kj/mol which means, for formation of 1 mole of Nacl,…

Q: 63.) What is the AH; value for octane given that the complete combustion of mole of octane to…

A: Combustion of octane takes place as follows: ∆Hrex = -5074.248 kJ ∆H˚Carbon dioxide = -393.5 kJ…

Q: Predict the effect of decreasing the temperature on the amounts of reactants in the following…

A: Exothermic reactions are ones in which the system emits heat into the environment. The enthalpy of…

Q: A bomb calorimeter has a heat capacity of 6.47 kJ/K. When a 0.107-g sample of ethylene (C2H4) was…

A: Heat of combustion is the heat produced when a molecule is combusted in air and produces water and…

Q: 17. Acetic acid, CH,CO,H, is made industrially by the reaction of methanol and carbon monoxide. AH =…

A: The reaction taking place is given as, Given: Volume of acetic acid produced = 1.00 L = 1000 mL…

Q: Find the heat of combustion of 1 mole of propane, C3H8, to form gaseous carbon dioxide and liquid…

A: Heat of recation means that total heat relaese in the combustion of C3H8 First we have to know ∆H°f…

Q: When 1.00 g1.00 g of ethanol (C2H5OHC2H5OH)is burned in the air, −29.7 kJ−29.7 kJ of heat energy is…

A: Combustion :- The burning of a compound in excess of  air or oxygen is called combustion . It is an…

Q: 2. The hydrogenation of coal is a method of producing methane by the following reaction: Ca + 2H2@)…

A:

Q: with 2 mol O2 (g) to produce 1 mol CO2 (g), 2 mol H2O(l), ​and 890 kJ of heat. Write a…

A: when any substance which burns in presence of oxygen that reaction is called as combustion reaction.…

Q: Among the equations below, indicate all those that are exothermic. i. HNO3(aq) + KOH(aq) → KNO3(aq)…

A: Concept based on the exothermic reactions and standard enthalpy of formation.

Q: CH4 (9) + 20, (9) → CO2(9) + 2H,0(1) AH=-891 kJ a. Calculate the enthalpy change if 2.80 g methane…

A:

Q: 1) H3O* 2) ELOH Br 1) CI , AICI3 2) Zn(Hg), HCI, heat conc. HNO3 conc. H2SO4 OCH3

A:

Q: Given the following reactions, calculate AH for Mn + O2 MnO2 3 MnO2 + 4 AI 3 Mn + 2 Al2O3 AH = -…

A: ΔH for the given reaction can be obtained using Hess's law.  Hess's law states that the overall…

Q: Using the following reactions, calculate the enthalpy change for: 10 POCI3 (g) P4010 (s) + 6 PCI5…

A:

Q: Which of the following scenes depict the process of an increase in the enthalpy?     Stirring a…

A: Answer: Enthalpy of the system decreases when process is exothermic and it loses heat and enthalpy…

Q: From the following enthalpies of reaction H2(g) + F2(g) – 2HF(g) AH = -537 kJ C(s) + 2 F2(g) →…

A:

Q: The heat of combustion of methane, CH4, is 50.1 kJ/g. How much heat would be generated if 1.00 mol…

A: Given, The heat of combustion of methane (CH4) = 50.1 kJ/g How much heat would be generated if 1.00…

Q: Using the equations 2 H2 (g) + O2 (g) → 2 H2O (I) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

A:

Q: The enthalpy of methanol, CH 3OH (MW=32.0 g/mol) is -7.26 x 10 2 kJ/mol. Calculate the grams of…

A: A numerical problem for determining the enthalpy of methanol, which is to be accomplished.

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (1) + 302 (g) CO2(g)…

A:

Q: Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2 CO(g) + O2(g)…

A: Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction:2 CO(g) + O2(g)…

Q: Calculate the approximate enthalpy change, ΔHrxnΔHrxn, for the combustion of one mole of methane a…

A: The enthalpy change for a reaction is equal to the difference between the sum of enthalpy of…

Q: NaOH(s)_> Na*(ag) + OH (ag), AH1 (kJ) (1) + Na (ag) + OH (ag) + H*(ag) + Cl(ag)_-> H2O(I) + Na*(ag)…

A:

Q: The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene…

A: The combustion enthalpy of acetylene is 1300 kJ/mol. The temperature of 1.05 gal water is raised by…

Q: Calculate the enthalpy of the following reaction: 2Mg + O̟ → 2M9O Given: Mg + 2HCI – M9CII, + H, MgO…

A: Hess's Law states that the total enthalpy of a chemical reaction is the sum of the enthalpy changes…

Q: КОН, heat ETOH H,0(1), heat CH2 NH,(aq), heat HCN, heat ETOH KOH(aq), heat

A:

Q: Isooctane is a primary component of gasoline and gives gasoline its octane rating. Burning isooctane…

A: Heat released = 330 KJ Initial temperature = 23.2℃ Final temperature = 66.5 ℃

Q: Combustible or energy-generating molecules that can be harnessed to produce mechanical energy and…

A: "Combustible or energy- generating molecules that can be harnessed to produce mechanical energy and…

Q: Methanol undergoes combustion according to the equation. Find the amount of heat given off from the…

A: Combustion :- The burning of a substance in excess of air or oxygen is called as combustion . It is…

Q: The enthalpy change in the combustion reaction of Hydrogen is H₂ ( g ) + ½ O₂ ( g ) H2O ( 1 ) AH =…

A:

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (l) + 3 O2 (g) → CO2…

A:

Q: 5. H2 (g) + '2 O2 (g) → H2O (1) 2 Na (s) + '/½ O2 (g)→ Na2O (s) Na (s) + '/½ O2 (g) + ½ H2 (g) →…

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

Q: nitrogen and hydrogen react to form ammonia: N2(g) + 3 H2(g) 2 NH3(g) AH=-92. kJ In the second step,…

A: The question is based on the concept of chemical thermodynamics. it involves the application of Hess…

Q: q) + HCI (aq) → H20 (1) + NacI (aq) 6.13 kJ/mol ny kilojoules of heat are produced when 1000 mL of…

A: The question is based on the concept of chemical thermodynamics. we have to calculate heat produced…

Q: The heat of reaction for the combustion of pentane, C5H12, is 838.7 kcal/mol. What is the heat of…

A:

Q: +3 CO(g) 2 Fe(s) + 3 CO2(g) 3 02(g) → 2 Fe203(s) AH = -1648 kJ → 2 CO(g) + 02(g) AH= +565.4 kJ

A: (1) 4Fe + 3O2----> 2Fe2O3, □H = -1648 kJ (2) 2CO2 ----> 2CO + O2, □H = +565.4 kJ (3) Fe2O3 +…

Q: H2 (g) + '/½ O2 (g) → H2O (1) 2 Na (s) + '/½ O2 (g) → Na2O (s) Na (s) + '/½ O2 (g) + '½ H2 (g) →…

A: Hess's law states that "the standard reaction enthalpy is the sum of the standard enthalpies of the…

Q: Combustion of C3H18 (1) forms water and carbon dioxide. Using the data given, calculate the amount…

A: Find the solution below

Q: (a) Given that the enthalpy values for the following reactions are: AH = -1049.0 kJ 2 Al (s) + 6HC1…

A:

Q: Can you please help me understand how to get the answer to this question. A 15.0 g sample of nickel…

A: There is a discrepancy in temperature of heated nickel.  In this problem, I have taken 200 degrees.…

Q: he heat change that accompanies the formation of 1.00 mol of carbon dioxide from its elements is…

A: The standard enthalpy of formation or standard heat of formation of a compound is the change of…

Q: Identify whether the following process are endothermic and exothermic.Justify your answer. 1.…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (1) +302(9) CO2 (9)…

A:

Q: Sr (s) + C(graphite) + 0,(g) → SrCO;(s) The information available is (1) Sr (s) + O2(g) → SrO (s)…

A: Hess's law states that the enthalpy change for the reaction is determined by adding the enthalpy…

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (1) + 302(g) →…

A:

Q: When 0.2490 moles of methane, CH4(g) is burned in excess oxygen at thermodynamic standard state,…

A: 0.2490 moles of methane releases 221.74kJ, then1 mol of methane releases ‘x’

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.