Consider the following reactions:+ O2(g)CO2(9)AH = -393.5 kJC(graphite)AH = -285.8 kJ+ 2 O2(9)'2(g)+ 2H,0)CO 2(g)AH = -726.4 kCH,OH+ 3/2 0,(1)2Choose...Choose...-37.639.0Calculate the enthalpy change for the following reaction:CH,OH268-238.7+ 2 H2la) + ½ O,-48.25(graphite)188.711.8510.7

The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Consider the following reactions: + O2(g) CO2(9) AH = -393.5 kJ (graphite) AH = -285.8 kJ H2(9) + ½ 0. 2(g) CH,OH (1) + 3/2 0, CO2(9) + 2H,0, + 2H,O) AH = -726.4 k Choose... Choose... -37.6 39.0 Calculate the enthalpy change for the following reaction: CH,OH 268 -238.7 + 2 H2(g) + 2 02 (graphite) -48.25 188.7 11.85 10.7

Consider the following reactions: + O2(g) CO2(9) AH = -393.5 kJ (graphite) AH = -285.8 kJ H2(9) + ½ 0. 2(g) CH,OH (1) + 3/2 0, CO2(9) + 2H,0, + 2H,O) AH = -726.4 k Choose... Choose... -37.6 39.0 Calculate the enthalpy change for the following reaction: CH,OH 268 -238.7 + 2 H2(g) + 2 02 (graphite) -48.25 188.7 11.85 10.7

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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6. Use the standard heat of formation AHf to calculate the AH for the reaction: a. C3H8 (g) + 5 O2 (g) C3H8 -104KJ O₂ =0 KI 3 CO2 (g) + 4H₂O (1) CO2 -393.5 KJ H₂O -286 KJ
5. Reaction Enthalpy. balance and calculate AHxn for the following chemical equations. AH (kJ/mol): HCN= 130.5, Ca3(PO4)2=-4120.8, H3PO4--1288, SiCl4=-640.1, SiO2= -910.9, Mg0=-601.6, HCl--167.16 a)NH₂(g) + O₂(g) + CH CH4(g) b)Ca₂(PO4)2(6) +H₂SO4(1) c)SICI(1) + H₂0 (1) d) MgO(s)+ H₂ H₂O(g) SIO₂ (s) + HCN HCN(g) + Caso (s) + H₂PO.(1) Mg(OH)2(s) H₂O(g) HCl(aq)
How much energy in kJ is required to decompose 765 g of PC13, according to the reaction below? (PCI3:137.32 g/mol) 20 - 4 PC|3(g) P4(s) + 6 Cl2(g) AH°rxn=+1207 kJ O A) 1681 O B) 5950 OC) 7016 D) 4582 E) 2310
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b) Construct an enthalpy cycle and calculate the enthalpy of combustion in each case using the above data. 3. Given the following data: AH(CH4) = -74.8 kJmol-¹, AH(CH3CI) = -134.5 kJmol-¹, AH (HCI) = -92.3 kJmol-¹; Construct an enthalpy cycle and calculate H for the reaction CH4(g) + Cl2(g) CH3CI(g) + HCl(g) 4. Given the data: 4NH3(g) + 302(g) 0 2N2(g) + 6H2O(1), AH = -1530kJmol-1 H2(g) + 1/2O2(g) □ H₂O(1), AH = -288 kJmol-¹ Construct an enthalpy cycle and calculate the enthalpy of formation of ammonia.
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ellus_engine.html?ClassID=1087757335# Calculate the standard reaction enthalpy for the reaction between NO and O3. NO(g) + O3(g) NO2(g) + O2(g) Compound AH°; (kJ/mol) NO(g) 90. AHxn = [ ? ] kJ %3D 0,(8) NO,(g) 143 34 Enter either a + or - sign and the magnitude. Enter
5. Reaction Enthalpy. balance and calculate AH for the following chemical equations. AH (kJ/mol): HCN = 130.5, Ca3(PO4)2=-4120.8, H3PO4-1288, SiCl₁=-640.1, SiO₂= -910.9, Mg0=-601.6, HCl=-167.16 d) Mg(s) + H₂0(g) 0 Mg(OH)2(s)
Match each of the following with its correct answer If AH°, of H,O is -285.8 KJ/mol and AH°, of H,0, 2 (g) the AH°, of evaporation of H,O in ( KJ/mol) is : 2 (L) is -241.8 KJ/mol, then (L) Choose... Given the following thermochemical equation: 2CH18(1) + 25 0,(g) 16CO,o) + 18 H,O -> AH° = -11020 kJ/mol If AH°, [CO,o] = -393.5 kJ/mol and AH°, [H,O] = -285.8kJ/mol, calculate the standard enthalpy of formation of octane ( C,H,) in kJ/mol Choose... v Consider the following reactions: