BuyFind

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
BuyFind

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

Solutions

Chapter
Section
Chapter 1, Problem 33E
Textbook Problem

Determine whether any of the following data sets on chemical reactions are inconsistent with the law of conservation of mass and therefore erroneous.

a. 6 grams of hydrogen react with 48 grams of oxygen to form 54 grams of water.

b. 10 grams of gasoline react with 4 grams of oxygen to form 9 grams of carbon dioxide and 5 grams of water.

Expert Solution
Interpretation Introduction

Interpretation:

The consistency of the given data sets on chemical reactions, with the law of conservation of mass is to be determined.

Concept Introduction:

The law of conservation of mass states that any system which is closed to the passing of the energy and matter has its mass constant because the mass of the system can never be changed. Therefore, no quantity can be removed or added to it. So, the mass remains conserved for all the chemical changes.

If a reaction is consistent with the law of conservation of mass, it means that in the given chemical reaction, the mass of reactants and the mass of products are equal to each other.

Explanation of Solution

a) 6 grams of hydrogen react with 48 grams of oxygen to form 54 grams of water.

According to the given values, 6 grams of hydrogen react with 48 grams of oxygen. Therefore, the total mass of the reactants is calculated as follows:

Total Mass of reactants=(6 grams hydrogen+48 grams oxygen)=54 grams

Hence, in this reaction, the total mass of the reactants and products is same, because the mass of the products is given as 54 grams and calculated mass of products is also 54 grams. No matter has been destroyed or added in this chemical reaction.

Therefore, this data on chemical reaction is consistent with the law of conservation of mass.

b) 10 grams of gasoline react with 4 grams of oxygen to form 9 grams of carbon dioxide and 5 grams of water

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Chapter 1 Solutions

Chemistry In Focus
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