Glencoe Chemistry: Matter and Change, Student Edition
Glencoe Chemistry: Matter and Change, Student Edition
1st Edition
ISBN: 9780076774609
Author: McGraw-Hill Education
Publisher: MCGRAW-HILL HIGHER EDUCATION
Expert Solution & Answer
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Chapter EH, Problem 9R
Solution

Interpretation: The balanced equation for the reaction between lithium and water needs to be determined.

Concept Introduction: A chemical reaction is said to be balanced if there are an equal number of the same atoms on both sides of the reaction arrow.

  Lis+H2OlLiOHaq+H2g

The reaction between lithium and water gives lithium hydroxide and hydrogen gas. The reaction can be represented as follows:

  Lis+H2OlLiOHaq+H2g

The above equation can be balanced by giving coefficient 2 to Lis , +H2Ol , and LiOHaq .

  2Lis+2H2Ol2LiOHaq+H2g

Thus, the balanced chemical equation is represented as follows:

  2Lis+2H2Ol2LiOHaq+H2g

The balanced chemical equation has an equal number of atoms of the same elements on both sides of the reaction arrow.

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