PQ-13. The Lewis dot structure of ethanol is given below. Estimate the enthalpy of combustion of ethanol (CH.OH) using the bond enthalpies in the table. Bond enthalpy /kJ-mol' C-H 413 H H H-C-C-O-H H H C-C 348 CHOH + 30, 2CO: + 3H,0 CO 358 C-O 799 O-H 463 0-O 495 (A) +1255 kJ-mol (B) -1255 kJ-mol! (C) -1509 kJ-mol ! (D) -2044 kJ-mol' malke: -(2)799 -(6) 463 -4376 breake: (5)413 Ran: 348 358 463 H9495 6919 92

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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PQ-13. The Lewis dot structure of ethanol is given below. Estimate the
enthalpy of combustion of ethanol (CH.OH) using the bond
enthalpies in the table.
Bond enthalpy /kJ-mol'
C-H
413
H H
H-C-C-O-H
H H
C-C
348
CHOH + 30, 2CO: + 3H,0
CO
358
C-O
799
O-H
463
0-O
495
(A) +1255 kJ-mol
(B) -1255 kJ-mol!
(C) -1509 kJ-mol !
(D) -2044 kJ-mol'
malke:
-(2)799
-(6) 463
-4376
breake:
(5)413
Ran:
348
358
463
H9495
6919
92
Transcribed Image Text:PQ-13. The Lewis dot structure of ethanol is given below. Estimate the enthalpy of combustion of ethanol (CH.OH) using the bond enthalpies in the table. Bond enthalpy /kJ-mol' C-H 413 H H H-C-C-O-H H H C-C 348 CHOH + 30, 2CO: + 3H,0 CO 358 C-O 799 O-H 463 0-O 495 (A) +1255 kJ-mol (B) -1255 kJ-mol! (C) -1509 kJ-mol ! (D) -2044 kJ-mol' malke: -(2)799 -(6) 463 -4376 breake: (5)413 Ran: 348 358 463 H9495 6919 92
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