What is the change in enthalpy in kilojoules when 3.24 g of CH;OH is completely reacted according to the following reaction 2 CH;OH(g) - 2 CH.(g) + O2(g) AH = 252.8 kJ

Q: Consider the hypothetical thermochemical equation 3 A + B 2 C for which AH = 59.3 kJ/mol. What would…

A: The reaction 2 C -----> 3 A + B is just the reverse of 3 A + B ------> 2 C   So the ΔH for the…

Q: What is the change in enthalpy in kilojoules when 3.24 g of CH,OH gas is completely reacted…

A:

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the molar enthalpy…

A: The balanced Chemical equation given in the question - Ca(s) + ½O₂(g) → CaO(s), ∆H° =-635 kJ/mol…

Q: if 0.0102 moles reacted and 476.5 J of heat were absorbed by the reaction in a coffee cup…

A:

Q: Suppose that the molar enthalpy of a reaction is 19.68 kJ/mol and 26 grams of X (MW = 19.66)…

A: Molar enthalpy of reaction is a term used in chemical thermodynamics. Molar enthalpy of reaction is…

Q: Consider the hypothetical thermochemical equation 3 A + B → 2 C for which ΔH = 65.5 kJ/mol. What…

A: 3 A + B → 2 C  deltaH = 65.5 kJ/mol it means that this thermochemical reaction absorbed 65.5 kJ…

Q: If 41,200 J of energy is required to raise the temperature of 120.0 g of a liquid by +73.4 °C, what…

A: In this question, we will determine the specific heat of the Solution.  You can see details step by…

Q: Write the thermochemical equation for the following reaction that occur at constant pressure. 1.)…

A: A thermochemical equation is defined as a chemical reaction in which the enthalpy of the reaction is…

Q: The standard enthalpy change for the following reaction is 270 kJ at 298 K. 2 HNO3(g) N2(g) + H2(g)…

A: Heat of formation of HNO3 = -135KJ/mol

Q: aq) with 25.00 mL of 2.56 M HCl(aq). If the temperature changed from 25.0 Degree C to 38.4 degree C,…

A: Introduction Generally the heat released in the reaction is absorbed by the solution and raises the…

Q: 9. The evaporation of water is endothermic: H2O (1) → H2O (g) AH°rxn = 44.01 kJ/mol What minimum…

A: H°rxn = 44.01 kJ / mol

Q: What is the change in enthalpy (ΔH) for a chemical reaction?How is ΔH different from ΔE?

A: In thermodynamics various terms are used. Some of these terms are work, heat, change in enthalpy,…

Q: What is the molar heat of combustion of methanol CH,OH ( in kJ/mol), if the combustion of 1.0 g of…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: pies of reactions are the same in the forward direct tions A and B add up to a reaction C, sum of…

A: According to Hess's law,  Enthalpy of a reaction remains constant whether it completes in single…

Q: The hypothetical element X and an oxide of X undergo the following reactions with oxygen, with the…

A: According to Hess law the standard enthalpy of reaction is equal to the sum of enthalpies of…

Q: What is the change in enthalpy in kilojoules when 3.24 g of CH,OH gas is completely reacted…

A: Given mass of CH3OH = 3.24 g  Molar mass if CH3OH = 32.04 g.mol-

Q: Glucose, C6H12O6(s), is converted to ethyl alcohol(ΔHfo = −1275.2 kJ/mol), C2H5OH(l), and carbon…

A:

Q: I. Give the thermochemical data below, find the change in enthalpy for the following reactions: NO…

A: ∆H of a reaction is the amount of heat released in the reaction.

Q: Methanol is known to be the simplest alcohol, and is used as an antifreeze agent, a solvent, a fuel…

A:

Q: For the chemical reaction H2 (g) + F2 (g) →2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for the…

A: The enthalpy of a reaction is dependant on the stoichiometric coefficients of reactants and products…

Q: Which balanced chemical equation corresponds to the enthalpy of formation (ΔHfo) of formaldehyde,…

A: Enthalpy of Formation is defined as the energy change to form one mole of compounds from its…

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for…

A: Heat of formation, also called standard heat of formation, enthalpy of formation, or standard…

Q: When 0.560 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at…

A: The solution of above question is-

Q: What is the change in enthalpy in kilojoules when 3.24 g of CH,OH ga completely reacted according to…

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

Q: For the chemical reaction Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol. What is the enthalpy (in…

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

Q: What is the enthalpy for reaction 1 reversed? reaction 1 reversed: N2O4→N2 + 202 Express your answer…

A: Enthalpy change is a thermodynamic parameter of a chemical reaction/ process.Positive sign of…

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: Consider the hypothetical reaction: A + 3B → 2C, which gives ΔH0 = 357.2 kJ. Determine the enthalpy…

A: To determine the enthalpy of the reverse reaction, just change the sign of the given enthalpy value.…

Q: Does the standard enthalpy of formation of H2O(g) differ from ΔH° for the reaction 2H2(g) + O2(g) ⟶…

A: The change in enthalpy of the reaction is equal to the difference between the enthalpies of…

Q: Write the thermochemical equation of one mole of nitrogen gas, N2 reacts with oxygen gas, O2, two…

A: The thermochemical equation has to be given.

Q: A 0.05mol sample of methane, CH4, is combusted under a calorimeter containing 250mL of H20. If the…

A:

Q: 1. Given that AH°,( BaSOle) = -1,473 KJ/mol, using the given table, what is standard enthalpy change…

A: Given reaction is :  Ba2+ (aq) + SO42- (aq)---------> BaSO4 (s)  Enthalpy of formation of BaSO4…

Q: A sample of 17.1g of solid with molar mass 71.9g/mol is dissolved in 331g of water initially at…

A: Given: Mass of water= 331 g Tf= 26.8°C Ti= 22.5°C

Q: A scientist measures the standard enthalpy change for the following reaction to be -351.2 kJ :…

A: The enthalpy of the formation of the substance is ; ∆H = enthalpy change for the reaction = 351.2 KJ…

Q: 1. The complete combustion of ethanol, C2H50H (1) to form H20(g) and CO2 (g) at constant pressure…

A: 1 mole of ethanol reacts with 3 moles of oxygen gas(complete combustion) and yields 2 moles of…

Q: Consider the reaction Ca(OH)2 (s)→CaO(s) + H₂O(1) with enthalpy of reaction AHrxn = 65.2kJ/mol What…

A:

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: For the chemical reaction H2 (g) + F2 (g) – 2 HF (g) AH° = -79.2 kJ/mol. %3D What is the enthalpy…

A: The given enthalpy of the reaction is -79.2 kJ/mol for the reaction: H2 (g) + F2 (g) → 2HF (g)

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the enthalpy for…

A: Ca (s) + ½ O₂ (g) → CaO (s) ∆H1°  .............................(1) 2 CaO (s) → 2 Ca (s) + O₂ (g)…

Q: When a piece of unknown metal weighing 63.40 grams, and at a temperature of 87.80 °C, is placed in a…

A: We will use calorimetry principle

Q: 6 & 7. Consider the following reaction: 2 CH,OH (g) → 2 CH(9) + O2 (g), AH = + 252.8 kJ a) Is this…

A:

Q: When O.376 g of sodium metal is added to an excess of hydrochloric acid, 3910 J of heat are…

A:

Q: To warm 400.0 g of H2O, 0.050 mol of ethanol (C2H5OH) is burned. The water warms from 24.6°C to…

A: The amount of heat required to increase the temperature of one kilo gram of a substance by one…

Q: What is the change in enthalpy (∆H) for a chemical reaction?How is ∆H different from ∆E?

A: In thermodynamics various terms are used. Some of these terms are work, heat, change in enthalpy,…

Q: Consider the hypothetical thermochemical equation 3 A + B → 2 C for which AH = 63.1 kJ/mol. Which…

A:

Q: For the chemical reaction Ca (s) + 02 (g)→CAO (s) AH° = -635 kJ/mol. What is the enthalpy for the…

A: Given reaction,      Ca(s) + 1/2 O2(g) → CaO(s)       ∆H0 = - 635 kJ/mol

Q: Calcium carbonate can be decomposed upon applying heat with the following equation CaCO3(s)  →…

A: Calcium carbonate can be decomposed upon applying heat with the following equation: CaCO3(s)  →…

Q: A system absorbs 1.54E2 kJ of heat and the surroundings do 1.118E2 kJ of work on the system. What is…

A: 2.618E2 = 2.618 * 10^2 kJ

Q: Cyclopentane, C5H10, has an enthalpy of combustion of –3292 kJ per mole of cyclopentane.  What mass…

A: Given: Enthalpy of combustion of cyclopentane ∆Hc is -3292 kJ/mol. The amount of heat released is…

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.