Asked by nona
18. Calculate ƒ´H for the following reaction using Hess law
H2 (g) + Br2 (g) ¡÷ 2 HBr (g)
Experimental information
2 H+ ¡÷ H2 ƒ´H -436.4 kJ
2 Br- ¡÷ Br2 ƒ´H -192.5 kJ
2 H+ + 2 Br- ¡÷2 HBr ƒ´H -144.8 kJ
H2 (g) + Br2 (g) ¡÷ 2 HBr (g)
Experimental information
2 H+ ¡÷ H2 ƒ´H -436.4 kJ
2 Br- ¡÷ Br2 ƒ´H -192.5 kJ
2 H+ + 2 Br- ¡÷2 HBr ƒ´H -144.8 kJ
Answers
Answered by
Ms. Sue
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Answered by
DrBob222
Reverse equation 1 and add to the reverse of equation 2 and add equation 3 as is. Remember to change the sign of dH when reversing an equation.
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Post your work if you have questions.
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