Basic chemistry help for students and teachers

 

Interactive Chemistry Worksheets for Students

 

Periodic table

Naming compounds

Basic formula

Simple compounds

Ionic compounds 1

Ionic compounds 2

Chemical suffixes

Old chemical names

Hydrocarbons - Alkanes

Alkanes, alkenes & alkynes

Alkanols to alkanoic acids

 

Common compounds

Common formula quiz

Acids, bases and salts

Covalent compounds

Printable worksheets
 

 

What is a carbonate?

Carbonates are compounds that contain the CO3 group.

Sodium hydrogen carbonate also called bi-carb of soda or baking soda is a common household carbonate.

Its chemical formula is NaHCO3

 

Identify which chemical compounds contain the carbonate group.

Click on the links for the answers.

No.
Chemical
Carbonate? Yes/No
1. Na2SO4 sodium sulfate Is this a carbonate? No
2. Na2CO3 sodium carbonate Is this a carbonate? Yes
3. NaNO3 sodium nitrate Is this a carbonate? No
4. CuSO4 copper sulfate Is this a carbonate? No
5. CuCO3 copper carbonate Is this a carbonate? Yes
6. CaCO3 calcium carbonate Is this a carbonate? Yes
7. Ca(NO3)2 calcium nitrate Is this a carbonate? No
8. PbSO4 lead sulfate Is this a carbonate? No
9. MgCO3 magnesium carbonate Is this a carbonate? Yes
10. SiC silicon carbide Is this a carbonate? No

 

Acids and Carbonate Reactions

Key point:

Compounds with a carbonate or CO3 group react with acids to produce carbon dioxide, CO2 gas.

 

General word equation

Acid + Metal carbonate Salt + Water + Carbon dioxide

All carbonates react with acids to produce salt, water and carbon dioxide gas.

The fizz produced in sherbet is a reaction between a food acid and a carbonate.

The ingredients dissolve in your mouth and react with each other producing the carbon dioxide fizz.

 

Examples of acid and carbonate reactions

1. Hydrochloric acid + sodium carbonate sodium chloride + water + carbon dioxide

2HCl + Na2CO 2NaCl + H2O + CO2

 

2. Sulfuric acid + copper carbonate copper sulfate + water + carbon dioxide

H2SO4 + CuCO3  CuSO4 + H2O + CO2

 

3. Nitric acid + magnesium carbonate magnesium nitrate + water + carbon dioxide

2HNO3 + MgCO3 Mg(NO3)2 + H2O + CO2

 

4. Acetic acid + sodium hydrogen carbonate  sodium acetate + water + carbon dioxide

CH3COOH + NaHCO3  CH3COONa + H2O + CO2