Lets number the reaction as 1, 2, 3 from top to bottom
required reaction should be written in terms of other
reaction
This is Hess Law
required reaction can be written as:
reaction 3 = -0.5 * (reaction 1) +0.5 * (reaction 2)
So, ΔHo rxn for required reaction will be:
ΔHo rxn = -0.5 * ΔHo rxn(reaction 1) +0.5 * ΔHo rxn(reaction
2)
= -0.5 * (-544.0) +0.5 * (-696.6)
= -76.30 KJ
Answer: -76.30 KJ
Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) 02(g) 2FeO(s) AH=-544.0 kJ...
Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + O2(g)— 2FeO(S) AH° = -544.0 kJ (2) 2Zn(s) + O2(g)— 2ZnO(8) AH° = -696.6 kJ what is the standard enthalpy change for the reaction: (3) Fe(s) + Zn(s) Fe(s) + Zno(s) AH° = ? kJ Submit Answer
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Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + O2(g)—2FeO(s) AH° = -544.0 kJ (2) Fe(s) + Cl2(g)—>FeCl2(5) AH° = -341.8 kJ what is the standard enthalpy change for the reaction: (3) 2FeCl2(S) + O2(g)—>2FeO(s) + 2Cl2(g) AH° = ? kJ Submit Answer Retry Entire Group 9 more group attempts remaining
Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + O2(g) 2FeO(s) AH°=-544.0 kJ (2) 2Hg)+ O2(g) +2HgO(s) AH°=-181.6 kJ what is the standard enthalpy change for the reaction: (3) FeO(s)+ Hg()Fe(s) + HgO(s) AH ? kJ
Given the standard enthalpy changes for the following two reactions: AHo 544.0 kJ (1) 2Fe(s)O2(g)2FeO(s) AHo 181.6 kJ (2) 2Hg()O2(g) +2HgO(s) what is the standard enthalpy change for the reaction: (3) FeO(s)Hg()>Fe(s) + HgO(s) AH° ? kJ Submit Answer 1 question attempt remaining
Use the References to access important values if needed for this question. Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + O2(g) →2FeO(s) AH° = -544.0 kJ (2) 2Zn(s) + O2(g)—2ZnO(5) AH° = 696.6 kJ what is the standard enthalpy change for the reaction: (3) FeO(s) + Zn(s)—>Fe(s) + ZnO(s) AH° = ?
Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) - 02(0) 2PbO() AH° = -434.6 kJ (2) Pb(s) + C12(8)—„PbCl2(5) AH' =-359.4 kJ what is the standard enthalpy change for the reaction: (3) 2PbCl2(s) + O2(9)—>2PbO(s) +2012(9) AH° = ?
Given the standard enthalpy changes for the following two reactions: AH° =-479.4 kJ 2NIO(s) (1) 2Ni(s) + O2(g) AH° =-181.6 kJ (2) 2Hg(1) + O2(g)→2HgO(s) what is the standard enthalpy change for the reaction: Ni(s)+ Hg0(s) AH° =? (3) NiO(s) + Hg(1) kJ
Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g) 2PbO(5) AH° = -434.6 kJ (2) Pb(s) + Cl2(g) →PbCl(s) AH° = -359.4 kJ what is the standard enthalpy change for the reaction: (3) 2 5C12(3) + O2(g)—2PbO(s) + 2Cl2(9) AH° = ?
Using standard heats of formation, calculate the standard enthalpy change for the following reaction 2HBr(g) H2(g) + Br2() ANSWER kJ Submit Answer Retry Entire Group 2 more group attempts remaining Given the standard enthalpy changes for the following two reactions: (1) Zn(s)+ Cl2(g) ZnCl2(s) AH° = -415.0 kJ (2) Fe(s) + Cl2(g) FeCl2(s) AH° = -341.8 kJ what is the standard enthalpy change for the reaction: (3) Zn(s) + FeCl(s) AH° ? ZnCl2(s) + Fe(s) kJ Given the standard enthalpy...