Free Practice Tests
Properties of Acids
The following are properties of acids:
1. Dilute acids have sour taste.
2. They turn moist blue litmus paper red.
3. Some acids are corrosive, however, this is not a general property.
4. Most acids are solids.
5. More reactive metals, e.g. Zn, Mg, Al and Fe react with acids to liberate hydrogen. Zn(s) + 2HCl(aq)
→ ZnCl2(aq) + H2(g)
6. Stronger and less volatile acids displace weaker and more volatile acids from
7. Acids, except very weak acids like H2CO3, when reacted with a trioxocarbonate(IV) liberate CO2, which turns lime water
2HCl(aq) + CaCO3(s) → CaCl2(aq) + H2O(l) + CO2(g)
H2CO3 dissolves a trioxocarbonate(IV) to give a bicarbonate (i.e., hydrogen trioxocarbonate(IV)).
H2CO3(aq) + CaCO3(s)
8. Acids react with bases or alkalis
to give salts and water.
9. Solutions of acids can conduct electricity (i.e., they are electrolyte).
10. Acids have pH values below 7.
The Concepts of Acids and Bases
What is Basicity of Acids
How to Determine Strength of Acids
Uses of Acids
Methods of Preparation of Acids
The BrØnsted-Lowry Concept of Acids And Bases
The Lewis Concept of Acids and Bases
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