What is a double replacement reaction? How are they different between single replacement reactions?
The clue lies in the name itself.
Double displacement reactions occur when two ionic compounds react, or when an ionic compound reacts with an acid. It only occurs in liquids.
There are 5 types of double displacement reaction, as shown below:
Salt + salt = insoluble salt + salt
Acid + carbonate = salt + H2O + CO2
Acid + base = salt + H2O
Ammonium + hydroxide = salt + H2O + NH3
Acid + sulfite = salt + H2O + SO2
Meanwhile, single-displacement is when one substance from the product switches places with the reactants.