Constants Periodic Table.. L n gH2O(1) + CC4 (1)→COCl2 (g) + 2HCI(g)You can use the following table of standard heats of formation (AH;) to calculate the enthalpy of the givenreaction.Standard Heat ofFormation (kJ/mol)Standard Heat ofElement/ CompoundElement/ CompoundFormation (kJ/mol)H(g)218N(g)473H2 (g)O2(g)0.CC4 (1)-139.5O(g)249H2O(1)-285.8HC1(g)-92.30kJareC(g)71COC2 (g)-218.8kJC(s)HNO3 (aq)-206.6Express the standard enthalpy of reaction to three significant figures and include the appropriate units.View Available Hint/s)O 1 1:31 Standard Enthalpy of Reaction33 of 42Learning Goal:To understand how standard enthalpy of reaction isrelated to the standard heats of formation of thereactants and products.Constants Periodic TableIn a generic chemical reaction involving reactants A and B and products C and D, aA + bB-cC + dD, thestandard enthalpy AHn of the reaction is given byThe standard enthalpy of reaction is the enthalpychange that occurs in a reaction when all thereactants and products are in their standard states.The symbol for the standard enthalpy of reaction isAHn, where the subscript "rxn" stands for"reaction." The standard enthalpy of a reaction iscalculated from the standard heats of formation (AH) (subscript "f" for formation) of its reactantsand products. Therefore, the standard enthalpyAHn of any reaction can be mathematicallydetermined, as long as the standard heats offormation (AH:) of its reactants and products areAH = cAH¿ (C) + dAH; (D) -aAH; (A) – bAH (B)Notice that the stoichiometric coefficients, a, b, c, d, are an important part of this equation. This formula is oftengeneralized as follows, where the first sum on the right-hand side of the equation is a sum over the products andthe second sum is over the reactants:AHn =Eoroducts nAH – Eactants mAHwhere m and n represent the appropriate stoichiometric coefficients for each substance.known.Part AWhat is AHn for the followingtion?AssignmentsP i 1:30

The reaction taking place is given as, And the standard heat of formation data given is,

In a generic chemical reaction involving reactants A and B and products C and D, aA + 6B+cC + dD, the standard enthalpy AHn of the reaction is given by AH = cAH; (C) + dAH; (D) –aAH (A) - bAH (B) Notice that the stoichiometric coefficients, a, b, c, d, are an important part of this equation. This formula is often generalized as follows, where the first sum on the right-hand side of the equation is a sum over the products and the second sum is over the reactants: AHn = Eproducts nAH - Ectants mAH %3D where m and n represent the appropriate stoichiometric coefficients for each substance. Part A What is AHn for the following ion? Assignments 1:30

In a generic chemical reaction involving reactants A and B and products C and D, aA + 6B+cC + dD, the standard enthalpy AHn of the reaction is given by AH = cAH; (C) + dAH; (D) –aAH (A) - bAH (B) Notice that the stoichiometric coefficients, a, b, c, d, are an important part of this equation. This formula is often generalized as follows, where the first sum on the right-hand side of the equation is a sum over the products and the second sum is over the reactants: AHn = Eproducts nAH - Ectants mAH %3D where m and n represent the appropriate stoichiometric coefficients for each substance. Part A What is AHn for the following ion? Assignments 1:30

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter15: Energy And Chemical Change

Section: Chapter Questions

Problem 112A: sample of natural gas is analyzed and found to be88.4% methane (CH4) and 11.6% ethane (C2H6) bymass....

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