In this I/GCSE Chemistry blog post, we will be looking at the main equations used for the reactions between the three main catagories of subtances.
Metal + Acid → Salt + Hydrogen
We call this the “Displacement” method.
Characteristics of the reaction
- Bubbles are given out
- Temperature rises (the reaction is exothermic, heat is released)
- Metal disappears
Acid + Base → Salt + water
We call this the Neutralization Method. Without fail, water is produced as a product in a neutralization reaction.
There are two types of “Neutralization” reactions.
1) Acid + Metal Oxide → Salt + Water
eg. Copper Oxide + Sulfuric Acid → Copper Sulfate + Water
Here, the Copper merges with Sulfuric acid to make Copper sulfate.
If you have iron oxide, nothing will change, the iron will merge with the sulfuric acid to make copper sulfate.
2) Acid + Metal Hydroxide → Salt + Water
eg. Hydrochloric Acid + Sodium Hydroxide → Water + Sodium Chloride
Characteristics of the Reaction
Reaction 1
- Amount of metal oxide decreases
- Temperature increases (exothermic reaction)
- Solution changes color.
Reaction 2
- Hydroxide starts to disappear
- Temperature increases (exothermic reaction)
Acid + Metal Carbonate → Salt + Water + Carbon Dioxide
E.g. Sulfuric Acid (Acid) + Copper Carbonate (Carbonate) → Copper sulfate (salt) + Water + Carbon Dioxide
Characteristics of reaction
- Metal carbonate starts to disappear
- Temperature rises (exothermic reaction)
- Color Change
That is all for this post!