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General Chemistry

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Chemical Reactions

Question
3 out of 15
 

An unbalanced equation is shown below. What is the coefficient of aluminum hydroxide in the final balanced equation?

A 1
B 2
C 3
D 7
Ans. B Let's start balancing the equation from the sulfate point of view. You have 3 sulfate groups in aluminum sulfate. It has to come from the sulfuric acid. So the coefficient is 3 for the sulfuric acid. Since there are 2 aluminums in aluminum sulfate, we can assign a coefficient of 2 to the aluminum hydroxide. The rest of the hydrogens and oxygens can be balanced with water.

The balanced equation should look like this:

image\28529 ch 2 sol 3.png

Chemical Reactions Flashcard List

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