Basic Chemistry (5th Edition)
Basic Chemistry (5th Edition)
5th Edition
ISBN: 9780134138046
Author: Karen C. Timberlake
Publisher: PEARSON
Question
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Chapter 8, Problem 8.33FU

(a)

Interpretation Introduction

Interpretation:

A balanced chemical equation for the oxidation of glucose needs to be represented.

Concept Introduction:

  • Combustion is a process in which a compound reacts with oxygen to form carbon dioxide and water
  • A chemical reaction is said to be balanced if there are equal number of atoms of one kind in the reactants and products

(a)

Expert Solution
Check Mark

Answer to Problem 8.33FU

  C6H12O6 + 6O2  6CO2 + 6H2O + Energy

Explanation of Solution

The chemical reaction that takes place during cellular respiration is the combustion of glucose to yield carbon dioxide and water along with the release of energy. The unbalanced reaction can be written as:

  C6H12O6 + O2  CO2 + H2O + Energy

The equation is not balanced since the number of C, H and O atoms in the reactants are 6, 12 and 8 respectively while that on the products are 1, 2 and 3 respectively. In order to balance the equation, multiply O2 on the reactants by 6 and both CO2 and H2O on the products by 6 to get:

  C6H12O6 + 6O2  6CO2 + 6H2O + Energy

(b)

Interpretation Introduction

Interpretation:

A balanced chemical equation depicting the production of glucose in plants needs to be represented.

Concept Introduction:

  • In plants, glucose is produced by the process of photosynthesis which involves the reaction of carbon dioxide and water in the presence of sunlight.
  • A chemical reaction is said to be balanced if there are equal number of atoms of one kind in the reactants and products

(b)

Expert Solution
Check Mark

Answer to Problem 8.33FU

  6CO2 + 6H2O + Sunlight (energy)  C6H12O6 + 6O2 

Explanation of Solution

The chemical reaction that takes place during photosynthesis is the combination of carbon dioxide and water in the presence of light to produce glucose and release oxygen. The unbalanced reaction can be written as:

  CO2 + H2O + Energy  C6H12O6 + O2 

The equation is not balanced since the number of C, H and O atoms in the reactants are 1, 2 and 3 respectively while that on the products are 6, 12 and 8 respectively. In order to balance the equation, multiply CO2 and H2O on the reactants by 6and O2 on the products by 6 to get:

  6CO2 + 6H2O + Sunlight (energy)  C6H12O6 + 6O2 

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Basic Chemistry (5th Edition)

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