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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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If common sugars arc heated too strongly, they char as they decompose into carbon ¡md water vapor. For example, if sucrose (table sugar) is bated, the reaction is

:math> C 12 H 22 O 11 ( s ) 12 C ( s ) + 11 H 2 O ( g )

at mass of carbon is produced if 1.19 g of sucrose decomposes completely?

Interpretation Introduction

Interpretation:

The mass of carbon produced from decomposition of 1.19 g of sucrose should be calculated.

Concept Introduction:

The mass of sucrose can be calculated from its mass using the following formula:

n=mM

Using the balanced chemical reaction, number of moles of carbon can be calculated from number of moles of sucrose.

Explanation

The balanced chemical reaction for decomposition of sucrose is as follows:

C12H22O11(s)12C(s)+11H2O(g)

Calculate number of moles of sucrose from given mass as follows:

n=mM

Molar mass of sucrose is 342.3 g/mol, number of moles can be calculated as follows:

n=1

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