Explain how to find the standard enthalpy of formation for one chemical in a chemical reaction if provided with standard enthalpies of reactions involving that chemical using Hess’ Law

Q: A scientist measures the standard enthalpy change for the following reaction to be 316.2 kJ : H2S(g)…

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Q: 5.60 How are the standard enthalpies of an element and of a compound determined?

A: The standard enthalpies of an element and of a compound have to be determined.

Q: A scientist measures the standard enthalpy change for the following reaction to be -910.7 kJ:…

A: Standard enthalpy (∆H°f) of formation of a substance is furnished as the enthalpy change associated…

Q: A scientist measures the standard enthalpy change for the following reaction to be -133.0 kJ :…

A: Given;

Q: A scientist measures the standard enthalpy change for the following reaction to be -1142.2 kJ:…

A: Standard enthalpy of formation of H2S (g) = -20.1 kJ/molStandard enthalpy of formation of O2 (g) = 0…

Q: Define the terms (a) standard reaction enthalpy. (b) standard enthalpy of combustion. (c) standard…

A: (a) Standard enthalpy of the reaction: The heat change when the molar quantities of reactants as…

Q: A scientist measures the standard enthalpy change for the following reaction to be 16.5 kJ :CO(g) +…

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Q: the standard enthalpy of formation of HCl(aq)  is  kJ/mol.

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Q: A scientist measures the standard enthalpy change for the following reaction to be -138.8 kJ : H2(g)…

A: The given reaction is as follows: H2(g)+C2H4(g) → C2H6(g) The standard enthalpy change for the…

Q: Nitrogen and oxygen gas combine to form nitrogen dioxide according to the reaction N2(g) + 20s(g)…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -29.5 kJ: I2(g)…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -1054.0…

A: For H2S: ΔH∘f=−20.63 kJ/mol For O2: ΔH∘f=0 kJ/mol For H2O:ΔH∘f=−285.8 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: A scientist measures the standard enthalpy change for the following reaction to be 189.8kJ:…

A: The data on standard enthalpy of formation of different compounds may be used to determine the…

Q: If 4.771 mol of a material produces 775.5 kJ of heat in a reaction, determine the molar enthalpy for…

A: Molar enthalpy for a reaction if it is an exothermic reaction is the heat produced per 1 mole of the…

Q: A scientist measures the standard enthalpy change for the following reaction to be -888.5 kJ :…

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Q: For a particular reaction, the system absorbs 6kJ of heat and does 1.5kJ of work on its…

A: Given: The heat absorbed by the system, (Q) = + 6 KJ. The work done, (W) = - 1.5 KJ (Negative as…

Q: A scientist measures the standard enthalpy change for the following reaction to be -896.4 kJ:…

A: Given : a reaction And ∆H° = -896.4 KJ

Q: Why not all endothermic processes that do work on the surroundings have the same sign for internal…

A: Endothermic processes are the processes which absorb heat energy from the surroundings. These…

Q: Pentane (C5H12) is a component of gasoline  that burns according to the following balanced equation:…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -146.4 kJ:…

A: The standard enthalpy of formation of a compound is the enthalpy change that occurs when 1 mole of…

Q: Pls help ASAP

A: Enthalpy of Formation :- Enthalpy of formation is the change of enthalpy during the reaction where…

Q: What two conditions must be met by a thermochemical equation so that its enthalpy change can be…

A: ∆Hf° is the sign of change in standard enthalpy of formation. Where , "∆" denotes change in enthalpy…

Q: A scientist measures the standard enthalpy change for the following reaction to be -145.7 kJ :…

A: The enthalpy of the reaction is considered as the state function that is it depends only on the…

Q: Using the standard enthalpies of formation listed in the accompanying table, calculate the standard…

A: The expression for the change in enthalpy is shown below: where; ∆Hproducts = change in enthalpy of…

Q: A scientist measures the standard enthalpy change for the following reaction to be -679.4 kJ :…

A: The given chemical reaction is as follows: 2NH3(g) + 2O2(g) → N2O(g) + 3H2O(l)  ,…

Q: Which of the following is true about Hess's law? The enthalpy change is dependent of the pathway by…

A: According to Hess Law, if a chemical reaction can be expressed as the sum of two or more chemical…

Q: A scientist measures the standard enthalpy change for the following reaction to be -967.6 kJ:…

A: Given: The reaction is as follows: 4NH3(g) + 5 O2(g)-------->4NO(g) + 6 H2O(g) The standard…

Q: A scientist measures the standard enthalpy change for the following reaction to be -780.8 kJ :…

A: The difference between the change in enthalpy of products and the reactants  is known as change in…

Q: A scientist measures the standard enthalpy change for the following reaction to be 80.1 kJ:…

A: Solution- ∆Hreaction=2∆HofFe2O4+∆Hof(H2O)- 3∆HofFe2O4+∆Hof(H2)∆Hreaction=2∆HofFe2O4+(-241.818kJ)-…

Q: KJ/mol. The heat of reaction for the combustion of a mole of Ti in this calorimeter is

A: The ∆Hcombustion is the amount of heat in the energy needed to burn per mole of a substance. Its…

Q: Is the change in enthalpy for a reaction an extensive property?

A: The enthalpy of a system is the sum of internal energies of the system and its  additional pressure…

Q: Using the standard molar enthalpies of formation given, calculate the standard enthalpy of reaction…

A: Taken from the standard values, Standard enthalpy of H2O = -241.83 KJ/mol Standard enthalpy of CO2 =…

Q: A scientist measures the standard enthalpy change for the following reaction to be -200.7 kJ :…

A: The given reaction is as follows: CO(g) + 3H2(g) → CH4(g) + H2O(g) The standard enthalpy change for…

Q: 1. The combustion of a sample of aluminium produces 0.25 mol of aluminium oxide and releases 419 kJ…

A: The combustion reaction of aluminum is given by: Als + 34O2g  → 12Al2O3s The enthalpy change in…

Q: A student burnt 0.40 g of ethanol using a calorimeter filled with 150 cm³ of water and noted a…

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Q: entist measures the standard enthalpy change for the following reaction to be 561.1 kJ: 3(g)Brz(g) +…

A: We will calculate the standard enthalpy of formation of BrF3(g)

Q: A scientist measures the standard enthalpy change for the following reaction to be -876.7 kJ :…

A: The given thermochemical equation is 2NH3(g) + 3N2O(g)  ------> 4N2(g) + 3H2O(g) ; ∆Horxn = -…

Q: A scientist measures the standard enthalpy change for the following reaction to be -348.6 kJ :…

A: The given reaction is : 2Na(s)  +  2H2O(l)  →  2NaOH(aq)  +  H2(g) The standard enthalpy change for…

Q: A scientist measures the standard enthalpy change for the following reaction to be-138.9 kJ: H;(2) +…

A: The standard enthalpy change of a system represents the heat content of a system or the heat…

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: standard enthalpy change

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Q: the standard enthalpy change for the following reaction to be -896.4 kJ : 4NH3(g) + 5 O2(g)4NO(g) +…

A: Given,  4 NH3(g) + 5 O2(g)  ------> 4 NO(g) + 6 H2O(g)  ∆H0Reaction = -896.4 kJ  The standard…

Q: A scientist measures the standard enthalpy change for the following reaction to be -171.6 kJ :HCl(g)…

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Q: A scientist measures the standard enthalpy change for the following reaction to be -901.4 kJ:…

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Q: the difference between changes in enthalpy and internal energy for the explosion of…

A: Nbh

Q: Which of the following values for the change in enthalpy of a reaction (∆Hrxn) and descriptions…

A: For  the exothermic reaction. The chemical reaction in which the heat is released from system to…

Q: hydrogen sulfide gas, H2S(g)H2S(g), reacts with oxygen gas, O2(g)O2(g) , sulfur dioxide gas,…

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Q: Use the References to access important values if needed for this question. A scientist measures the…

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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)…