Tutored Practice Problem 5.5.1 COUNTS TOWARDS GRADEClose ProblemUse Hess's law to calculate enthalpy change.Given the following two reactions:(1)Ba(S) + ClL(8)—ВаС%()AH(1) = -858.6 kJ(2)Zn(s) + Cl2(g) ZnCl½(s)AH(2) = -415.1 kJcalculate the enthalpy change for the following reaction:(3) BaCl2(s) + Zn(s)→ Ba(s) + ZnCl2(s)AH(3) =kJCheck & Submit AnswerShow Approach

The enthalpy change in a reaction can be calculated by checking the enthalpy of the reaction…

Tutored Practice Problem 5.5.1 COUNIS TOWARDS GRADE Use Hess's law to calculate enthalpy change. Given the following two reactions: (1)Ba(s) + Cl2(g)- →BaCl2(s) AH(1) = -858.6 kJ (2)Zn(s) + Cl½(g)–¬ZnCl½(s) AH(2) = -415.1 kJ calculate the enthalpy change for the following reaction: (3) BaCl2(s) + Zn(s)→ Ba(s) + ZnCl½(s) AH(3) = kJ Check & Submit Answer Show Approach

Tutored Practice Problem 5.5.1 COUNIS TOWARDS GRADE Use Hess's law to calculate enthalpy change. Given the following two reactions: (1)Ba(s) + Cl2(g)- →BaCl2(s) AH(1) = -858.6 kJ (2)Zn(s) + Cl½(g)–¬ZnCl½(s) AH(2) = -415.1 kJ calculate the enthalpy change for the following reaction: (3) BaCl2(s) + Zn(s)→ Ba(s) + ZnCl½(s) AH(3) = kJ Check & Submit Answer Show Approach

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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< Question 23 of 24 For a particular isomer of C,H,3, the combustion reaction produces 5093.7 kJ of heat per mole of C,H(g) consumed, under standard conditions. 25 C,H,,(8) +0,(e) = -5093.7 kJ/mol 8 CO, (g) +9 H,O(g) AHxn 2 What is the standard enthalpy of formation of this isomer of CH (g)? kJ/mol AH; = MacBook Air
2. จงหาค่า AH ของปฏิกิริยานี้ จากข้อมูลที่กำหนดให้ 2C (s) + 2 H,0 (g) → CH, (g) + CO,(g) Determine the standard enthalpy change for this reaction from the following standard enthalpies of reaction: (1) C(s) + H,O (g) → CÓ (g) + H, (g) AH° = 131.3kJ (2) CO (g) + H2O (g) → CO2 (g) + H2 (g) ΔΗΟ = -41.2 kJ (3) CH, (g) + H,O (g) → 3H, (g) + CO (g) AH° = 206.1kJ ชื่อ-สกุล .วันที่ เลขที่ เรหัส.. (0202104) จงหาค่า AH และ As ของปฏิกิริยานี้ จากข้อมูลที่กำหนดให้ 3 ปฏิกิริยาการสังเคราะห์ด้วยแสงเกิดขึ้นดังสมการ 6 CO, (g) + 6 H,0 (1) CH2O6 (S) + 6 0, (g) กำหนดค่าที่สภาวะมาตรฐานของ AH และ S ของสารแต่ละตัว ดังนี้ AH°, (kJ mol-') s° (JK-1 mol-') สาร | CH,206 (s) -1,273 212 O, (g) 205 2/2 CO, (g) -393 214 H,0 (1) -285 70
enon 19 of 23 For the chemical reaction Ca (s) + % O2 (g) What is the enthalpy for the reaction 2 CaO (s) → 2 Ca (s) + O2 (g)? CaO (s) AH° = -635 kJ/mol.
4. Hess's Law Calculate AH for the reaction: 2 C(s) + H2(g) → C:H2(g), given the following chemical equations and their respective enthalpy changes: C2H2(g)+02(g)→2CO2(g)+H20(1) AH, = -1299.6 kJ (1) %3D C(s)+02(g)→CO2(g) AH, = -393.5 kJ (2) H2(g)+502(g)→H20(1) AH3 = -285.8 kJ (3)
For which one of the following is the enthalpy of the reaction the same as the enthalpy of formation? A) 2 H (g) + Se (s) → H:Se (g) B) KOH (s) → K*(aq) + OH- (aq) C) 2 Fe (s) + 3 Cl2 (g) → 2 FeCl3 (s) D) Ni (s) + ½ O2 (g)- NiO (s)
Given the following reactions Reactions Enthalpies of Reaction 1 Na(s) + Cl2(8) → Na(g) + Cl(g) AH = 257 kJ 2 Na(g) + Cl(g) → Na*(g) + Cl(g) AH = 164 kJ 1 Cl2(g) → Nacl(s) Na(s) + AH = -333 kJ Use Hess' Law to determine the AH for the following reaction: (watch your states and charges) Na*(g) + Cl'(g) → NaCI(s) X kJ
and 2 Enthalpy #1.30 enoindice pled TT 2010 2D49.bs 22) When 1 mole of Fe2O3(s) reacts with H₂(g) to form Fe(s) and H2O(g) according to the following equation, 98.8 kJ of energy are absorbed. (6 Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H₂O(g) (pp) (20/d4 (pm) $40 D Reaclanis 13:48 SH Products endothermic, A endothermic, B (2) exothermic, A exothermic, B nad W (21 Enthalpy MOMS. Reactants Products (A) (B) Is the reaction endothermic or exothermic, and which of the enthalpy diagrams above represents grow olor and to noin (01 this reaction? SH GH TH A HOMH X HILD 08.10 Page 6 of 8
4) Given the data N2(8) + O2(8) 2 NO(8) AH = +180.7 kJ 2 NO(8) + O2(8) · 2 NO,(8) 2 N,0(8) – 2 N2(8) + O2(8) AH = -163.2 kJ AH = -113.1 kJ | use Hess's law to calculate AH for the reaction N20(8) + NO2(8) –→ 3 NO(8)
Use the thermochemical equations shown below to determine the enthalpy for this reaction: 2 H2O(g) + 2 Cl2(g) →4 HCl (9) + O2(g) ΔΗ xn Information: COCI 2(g) + H2O(l) → CH2Cl2(1) + O2(g) AH = 19 kJ H2O(g) →H2O(l) AH = -44 kJ HCI (g) 1/2 H2(g) +1/2 Cl2(g) AH = 92 kJ CH2Cl2(1) + H2(g) + 3/2 O2(g) → COCI 2(g) + 2 H2O (1) AH=-161k]
#5
Given the following two reactions:(1)Fe(s) + Cl2(g)->FeCl2(s) H(1) = -341.8 kJ(2)Hg(l) + Cl2(g)->HgCl2(s) H(2) = -224.3 kJcalculate the enthalpy change for the following reaction:(3) FeCl2(s) + Hg(l)-> Fe(s) + HgCl2(s) H(3) = kJ
The enthalpy changes, AH, for three reactions are given. H, (g) + H, O(1) AH= -286 kJ/mol Ca(s) + 2 H*(aq) Ca2+(aq) + H, (g) Ca+(aq) + H, O(1) AH = -544 kJ/mol CaO(s) + 2 H*(aq) AH = -193 kJ/mol Using Hess's law, calculate the heat of formation for CaO(s) using the reaction shown. Ca(s) + O,(g) CaO(s) AH kJ/mol