9. Calculate AH for the following reaction: 2B (s)+ 3,0,(g) → B,0, (s) Use the following reactions and given AH's B,0, (s)+ 3 H,0 (g) →B,H,(g)+30, (g) AH=+2035 kJ 2 H,0 (1) →2H,0(g) ΔΗ+88 kJ H, (g)+ ½0, (g)→ H,0 (1) AH=-286 kJ 2B (s) + 3 H, (g) →B,H,(g) ΔΗ-+36 kI

9. Calculate AH for the following reaction: 2B (s)+ 3,0,(g) → B,0, (s) Use the following reactions and given AH's B,0, (s)+ 3 H,0 (g) →B,H,(g)+30, (g) AH=+2035 kJ 2 H,0 (1) →2H,0(g) ΔΗ+88 kJ H, (g)+ ½0, (g)→ H,0 (1) AH=-286 kJ 2B (s) + 3 H, (g) →B,H,(g) ΔΗ-+36 kI

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 81QRT

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Question

9. Calculate AH for the following reaction:
2B (s)+ ,0,(g) →B,O, (s)
2.
Use the following reactions and given AH's
B,0, (s)+ 3 H,0 (g) -→B,H, (g) + 30, (g)
AH=+2035 kJ
2H,0 (1) →2 H,O(g)
AH=+88 kJ
H, (g)+ !, 0, (g) → H,0()
AH=-286 kJ
%3D
2 B (s) + 3Н, (g) >В, Н. (g)
AH=+36 kJ
6
I

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