is this the standard enthalpy change, enthalpy change, enthalpy of solution, or the standard molar enthalpy of formation?

Q: In a constant‑pressure calorimeter, 65.0 mL of 0.350 M Ba(OH)2 was added to 65.0 mL of 0.700 M HCl.…

A: Given:65.0 mL of 0.350 M Ba(OH)265.0 mL of 0.700 M HCl.Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O

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: e the standard enthalpy change, 4,H for the reaction.

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Q: Give the mathematical expression of enthalpy.

A: Enthalpy: it is the total amount of heat in a particular system. That is the amount energy absorbed…

Q: Why can we measure only changes in enthalpy, not absolute enthalpy values?

A: Enthalpy is the sum of the system's internal energy and the product of its pressure and volume.…

Q: In a constant-pressure calorimeter, 50.0 mL of 0.320M Ba(OH), was added to 50.0 mL of 0.640 M HCI.…

A: Given that : Volume of Ba(OH)2 solution = 50.0 mL Concentration of Ba(OH)2 = 0.320 M Volume of HCl…

Q: he standard enthalpy of fo

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Q: 10.5 g of solid ammonium nitrate are dissolved into a 100.0 g sample of water. The standard enthalpy…

A: Ammonium nitrate is a solid salt it can dissolve in the water .then it can ionise as ions  and AC as…

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

A: Indroduction : Heat is lost due to the dissolution of the salt in the water . So the enthalpy change…

Q: If a student determined that the enthalpy of solution in kJ was -3.15 kJ and they used 0.045 mol of…

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Q: A sample of solid lithium bromide and calcium chloride  were put in a lab for an hour. Their…

A: When 1 mol of a ionic substance is dissolve in water to form a solution at infinite dilution is…

Q: When a 4.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given,4.00 g sample of KBrTotal heat capacity of 3.04 kJ K-1.The temperature decreased by 0.220…

Q: A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the…

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Q: The enthalpy for the formation of 1 mole of NH3(aq) is -80.29 kJ/mol. What is the enthapy for the…

A: The heat of formation of a compound is defined as the heat change accompanying for the formation of…

Q: (a) What is meant by the term standard conditions with referenceto enthalpy changes? (b) What is…

A: a) Standard conditions with respect to the enthalphy of changes would be the enthalphy that is…

Q: Use standard enthalpies of formation to determine ΔHºrxn  (kJ) for : 2NO2(g) -> N2O4 (g)

A: The enthalpy of the reaction, ΔH is calculated as,

Q: standard enthalpies c

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Q: How do I find kJ/mol with the enthalpy change given?

A: Given : enthalpy change  Required : KJ.mol-

Q: Calculate the standard enthalpy of formation of C2H6 from its elements using the following data:

A: In a chemical reaction, the enthalpy of reaction (ΔHreaction) is the difference in enthalpy between…

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: The standard enthalpy of reaction, AHº, for the reaction: 3H2(g) + N2O3(g) = N2(g) + 3H20(1) (1) is…

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Q: e standard molar enthalpy

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Q: A scientist measures the standard enthalpy change for this reaction to be 2863.2 kJ/mol. 6CO2(g) + 6…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: What is enthalpy, and what is ΔH for a reaction, and what does it mean if ΔH is positive or…

A: Enthalpy can be defined as the total amount of heat of the system which can be represented by a…

Q: The enthalpy increase of N; when heated between 300 and 1500 does not exceed 100 kl/mol.

A: Here we have to predict whether given statement is true and false.  The statement given is " The…

Q: In a coffee-cup calorimeter, 1.59 g NH4NO3 is mixed with 74.3 g water at an initial temperature of…

A: Enthalpy change of dissolution is calculated as : ∆H = - q / n  where , n = moles  q = heat of…

Q: standard enthalpy change for the following reaction to be -208.6 kJ : CO(g) + 3 H2(g)CH4(g) +…

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Q: The enthalpy change for the reaction 2H2 (g) + O2 (g) → 2H2O (g) is −483.6 kJ/mol. The enthalpy…

A: Here, for the given process, the heat released in formation of 2 moles of water is given as ∆H=…

Q: Calculate the standard enthalpy, AH°, in kJ/mol for the reaction below. C6H1206(s) + 9O2(g) →…

A: To solve this problem we will use the enthalpy of formation of given compound in the reaction. Since…

Q: of enthalpy

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Q: The standard enthalpy of formation of H2O20 is -187.8 kJ-mol-1 and of H2Om is - 285.8 kJ-mol-1.…

A: The reaction given is, => 2 H2O2 (l) → 2 H2O (l) + O2 (g) Given: ΔHof{H2O (l)} = -285.8 KJ/mol.…

Q: Differentiate the enthalpy of a solution with the enthalpy of combustion or a reaction. Also, give…

A: Enthalpy of the solution is the heat released or given for the formation of a solution while…

Q: Calculate the standard enthalpy of reaction for the reaction 2Na + 2H2O——> 2NaOH+ H2. Standard…

A: The reaction is given below.

Q: What is the standard enthalpy of formation of carbon dioxide?

A: The change in enthalpy when one mole of compound is created from its constituents from their most…

Q: cion 16 öf 24 In a constant-pressure calorimeter, 50.0 mL of 0.340 M Ba(OH), was added to 50.0 mL of…

A: Given molarity of HCl = 0.680 M molarity of Ba(OH)2 = 0.340 M Volume of HCl = 50 ml Volume of…

Q: What is the connection between Hess's law and the fact that enthalphy is a state function?

A: Chemical thermodynamics is branch of chemistry in which we deal amount of heat evolved or absorbed…

Q: Calculate the standard enthalpies of the following reactions from the standard molar enthalpies of…

A: 2NH3(g) + 3N2O(g) → 4N2(g) + 3H2O(l) We should know the values standard enthalpy of formation of the…

Q: A scientist measures the standard enthalpy change for this reaction to be -138.2 kJ/mol:…

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Q: The enthalpy for the formation of 1 mole of NH3(aq)NH3(aq) is -80.29 kJ/molkJ/mol. What is the…

A: The standard molar enthalpy of formation is defined as the standard change in enthalpy for the…

Q: What is meant by the term standard conditions with reference to enthalpy changes?

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

Q: Write the equation corresponding to the standard enthalpy of formation of liquid carbon…

A: The chemical reaction corresponding to formation of carbon tetrachloride is given as:C (s) + 2 Cl2…

Q: ne standard enthalpy of

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Q: Using the provided table, determine the enthalpy (in kJ/ mol) for the reaction 2 NH3 (g) + 3 N,0…

A: The given reaction is: 2NH3 (g) + 3N2O (g) → 4N2 (g) + 3H2O (g)   The given enthalpies of formation…

Q: Using the provided table, determine the enthalpy for the reaction 2 K(s) + 2 H,O(1) → 2 KOH (aq)…

A: The chemical reaction is:2 K (s)+ 2H2O (l) → 2KOH (aq)+H2 (g)         ∆HrGiven: ∆Hf° {K (s)} = 0∆Hf°…

Q: A scientist measures the standard enthalpy change for the following reaction to be 79.4 kJ:…

A: Consider the given reaction is as follows;  NH4Cl(aq)   →      NH3(g)    +     HCl(aq)…

Q: Cold packs (like the kind used by athletes to treat sprains and other minor injuries) rely on the…

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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.