   # Combustion of table sugar produces CO 2 ( g ) and H 2 O( l ). When 1.46 g table sugar is combusted in a constant-volume (bomb) calorimeter, 24.00 kJ of heat is liberated. a. Assuming that table sugar is pure sucrose, C 12 H 22 O 11 (s), write the balanced equation for the combustion reaction. b. Calculate ∆E in kJ/mol C 12 H 22 O 11 for the combustion reaction of sucrose. ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 7, Problem 95AE
Textbook Problem
94 views

## Combustion of table sugar produces CO2(g) and H2O( l). When 1.46 g table sugar is combusted in a constant-volume (bomb) calorimeter, 24.00 kJ of heat is liberated.a. Assuming that table sugar is pure sucrose, C12H22O11 (s), write the balanced equation for the combustion reaction.b. Calculate ∆E in kJ/mol C12H22O11 for the combustion reaction of sucrose.

a)

Interpretation Introduction

Interpretation: The combustion reaction of sucrose has to be written and internal energy ( ΔE ) of this reaction should be calculated.

Concept Introduction:  Internal energy is a total energy of a system. Which is consists of kinetic, potential energies. The internal energy change is accompanies the heat flow or as work done on or by a system.

Formula:

ΔE=q±w......(1)

q is a heat

w is a work

Constant-volume calorimetry:

The measurement of heat change at constant volume is called as Constant-volume calorimetry or bomb calorimetry.

at constant volume the equation (1) will be

w=0 so ΔE=q......(2)

### Explanation of Solution

Given data:

Mass of sucrose is 1.46 g

Molecular weight of sucrose is 342.30g

Energy (heat) released is 24.00 kJ.

To write: Balanced equation of sucrose combustion reaction.

The molecular formula of sucrose is C12H22O11 so this will react with Oxygen to give Carbon dioxide and water

b)

Interpretation Introduction

Interpretation: The combustion reaction of sucrose has to be written and internal energy ( ΔE ) of this reaction should be calculated.

Concept Introduction:  Internal energy is a total energy of a system. Which is consists of kinetic, potential energies. The internal energy change is accompanies the heat flow or as work done on or by a system.

Formula:

ΔE=q±w......(1)

q is a heat

w is a work

Constant-volume calorimetry:

The measurement of heat change at constant volume is called as Constant-volume calorimetry or bomb calorimetry.

at constant volume the equation (1) will be

w=0 so ΔE=q......(2)

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