*You may need your knowledge in balancing equations which you had learned in your Chem. 11. Calculate AH for the reaction from the given thermochemical equations. Tell whether the reaction is exothermic or endothermicC:H« (9) + Ha(g)CaHo(g)CO-(g)CO2(g)H;O(1)H20()H20()AH = -1411 kJ* CHalg)* CaHelg) + O2(g)* Hz(g) + Oz(g)O2(9)AH = -1569 kJ+AH = -285.8 kJ

Consider the given reaction for which we need to determine ∆H is as follows; C2H4 g + H2 g →…

Answered: *You may need your knowledge in…

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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The value of AH° for the reaction below is 128.1 kJ CH ,OH CO24) OH () + 2H 2(g) How may kJ of heat are consumed when 5.7 g of H2(g) is formed as shown in the equation? Given that the atomic mass of C = 12.01 g/mol, H = 1.008 g/mol, O = 16.00 g/mol Show your answers in TWO (2) decimal places. Do not include the units in your final answers.
Calculate the enthalpy, AH for this reaction in kJ, given the data below to ONE DECIMAL PLACE. DO NOT INCLUDE UNITS IN YOUR ANSWER. |20(s) + H2(g) ---> C2H2(g) AH° = ??? kJ Given the following thermochemical equations: C2H2(g) + 5½O2{g) ---> 2CO2(g) + H2O(e) AH° = -1,071.2kJ C(s) + O2(g) ---> CO2(g) AH° = -375.6 kJ H2(g) + ½O2(g) ---> H2O(e) AH° = -285.8 kJ
According to Le Chatelier’s Principle, does the following reaction shift towards reactants, towards products, or have no shift when heat is added to the following exothermic reaction? C(s) + CO2(g) ⇆ 2CO(g) + heat
You place 32.3 ml of 0.134 M Ba(OH), in a coffee-cup calorimeter at 25.00°C and add 60.6 ml of 0.433 M HCI, also at 25.00°C. After stirring, the final temperature is 28.63°C. {assume that the total volume is the sum of the individual volumes and that the final solution has the same density (1.00 g/ml) and specific heat capacity (4.184 J/g°C) as water}. Calculate the change in enthalpy, AH, of the reaction (in kJ/mol) of water formed. Enter the appropriate sign (+/-). Enter a number to 1 decimal place.
Hydrogen cyanide is used in the manufacture of clear plastic such as plexiglas. it is prepared from ammonia and methane according to the following reaction. calculate the value of q(KJ) if 9.436 g of ammonia react with excess oxygen and methane.
A chemist measures the enthalpy change AH during the following reaction: 2 H,O(1) + O2(9)→2 H,O2(1) ДН-196. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ x10 4H, 0, (1) → 4H,0(1) + 20, (g) kJ 2H,0, (1) → 2H,0(1) + 0, (g) I kJ 1 H,0(1) + 0,(2) - H,0,) H,0, (1) O kJ
A chemist measures the enthalpy change AH during the following reaction: C,H,0,(s)-3 CH,(o) + 3CO,(g) AH=-132. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction AH 9CH, (0) + 9Co, (a) - 30H,0,0) 3CH, (6) + 300, (a) - C,H,0,0) GH,0,) - CH, 6) + co,()
4) Consider the thermochemical equation below. What mass of HgO must decompose to consume 400.0 kJ of heat? 2 HgO (s) → 2 Hg (1)+ O2(g) AH°rxn =+ 181.4 kJ (1) 5) Write the standard formation reaction for KAI(SO4)2(s). (1) 3 CO2 (g). (1) -393.5 kJ/mol 2 Cr (s) + 3 CO (ag) -110.5 kJ/mol Cr2O3 (s) 6) Consider the reaction 0.0 kJ/mol AH°f = -1139.7 kJ/mol Calculate AH°rxn.
Zinc metal reacts with hydrochloric acid according to the following balanced equation: Zn(s) + 2HCl(aq)-> ZnCl2(aq) + H2(g) When 0.115g of Zn(s) is combined with enough HCI to make 52.6mL of solution in a coffee - cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 21.5 °C to 24.7 °C. Part A Find \Delta Hrxn for this reaction as written. (Use 1.00 g/mL for the density of the solution and 4.18 J/(g°C) as the specific heat capacity.)
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Can someone verify my answers? I got: a) endothermic b)-1149.5 J c) 1149.5 J d)0.0117 mol e) 97704.05 J/mol
Determine the enthalpy change, AH, in kJ, for the following reaction: CS2 (1) + 302 (g) --> CO₂ (g) + 2SO₂ (g) given the following thermochemical equations: C (s) + O₂ (g) --> CO₂ (g) ΔΗ = 90.1 kJ S (s) + O₂ (g) --> SO₂ (g) ΔΗ = -352 kJ C (s) + 2S (g) --> CS₂ (1) ΔΗ = 86.5 kJ Do not report units in your answer. Report your answer to one decimal place and include the correct sign in your answer.

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