Decomposition Acids Oxides Electrolysis

Decomposition Acids Oxides Electrolysis

by Carol Martinez

​Decomposition of Acids

​Oxiacids will break down into:

​

Water + Molecular oxide

​

​To know which molecular oxide is produced, you need to know the oxidation state of the middle element.

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​Reminder: Oxidation number

​In acids, you have to consider these two rules for oxidation number:

​

1. ​Hydrogen is +1

2. ​Oxygen is -2

Multiple Choice

Calculate the oxidation number of Nitrogen, in

$$HNO_3$$  

• 3

• 5

• 1

• 7

Multiple Choice

If you combine Chromium IV and Oxygen (which has a charge of -2) the compound formed is...

• $$Cr_2O_6$$  

• $$CrO_3$$  

• $$CrO_2$$  

• C

Fill in the Blanks

Let's try these examples of the Decomposition of Oxyacids:

$H_2CrO_{4\ \rightarrow}$