Definition
Characteristics of Acids
Acids can be classified as
- Tastes sour
- Turns Blue Litmus Red
- Conduct electricity in Water
- Ionises to give
ions
Types of Acids
Hydracids
These contain Hydrogen and a non-metallic element and NOT oxygen. For example, HCl, HBr, HI, etc
Oxy acids
These contain Hydrogen and Oxygen with some other element.
For example,
Also can be categorised in Mineral - non-mineral acids
Reactions
With Metals
An acid always reacts with metals to give salt and hydrogen gas.
With Metal Oxides
Metal Oxides are basic in nature, so a Neutralisation Reaction follows.
With Metal Carbonates / Metal Hydrogen-Carbonates
Acids react with Metal Carbonates / Metal Hydrogen-Carbonates to form Salt, water and Carbon-dioxide Gas
With Water
Acids dissolved in water dissociate and form Hydronium ions.
Why? Because H+ ions are not stable alone, so they combine with water.
Flame Colours
| Na | Yellow |
|---|---|
| Mg | White |
| Al | Silver White |
| Cu | Blue |
Testing
Testing of Hydrogen Gas
It can be done by putting a burning candle in front. If it burns with a pop, it is Hydrogen Gas.
Testing of Carbon Dioxide
It can be passed through a solution of
Excess Reaction
Mixing Acid to Water
Backlinks
Flashcards
What are acids? ? Acids can be classified as
- Tastes sour
- Turns Blue Litmus Red
- Conduct electricity in Water
- Ionises to give
ions
How does an acid react with a metal?
?
An acid always reacts with metals to give salt and hydrogen gas.
How does an acid react with Metal Oxides?
?
Metal Oxides are basic in nature, so a Neutralisation Reaction follows.
How does an acid react with Metal Carbonates / Metal Hydrogen-Carbonates
?
Acids react with Metal Carbonates / Metal Hydrogen-Carbonates to form Salt, water and Carbon-dioxide Gas
How do you test for hydrogen gas? ? It can be done by putting a burning candle in front. If it burns with a pop, it is Hydrogen Gas.
How do you test for carbon-dioxide gas?
?
It can be passed through a solution of
How does an acid react in water?
?
Acids dissolved in water dissociate and form Hydronium ions.
Why does acids form Hydronium ions in reaction with water?
?
Because H+ ions are not stable alone, so they combine with water.
What happens when you pass excess CO2 in CaCO3 + H2O solution?
?