What are common examples of soluble salts?

Common examples of soluble salts include sodium chloride, potassium nitrate, and ammonium sulfate.

Soluble salts are a category of salts that can dissolve in water. This is due to the polar nature of water molecules, which can attract and separate the positive and negative ions in a salt. Sodium chloride, also known as table salt, is a prime example of a soluble salt. It is composed of sodium ions (Na+) and chloride ions (Cl-), which are readily separated by water molecules, making it highly soluble.

Potassium nitrate (KNO3) is another example of a soluble salt. It is often used in fertilisers due to its high solubility, which allows it to be easily absorbed by plants. The potassium ions (K+) and nitrate ions (NO3-) in potassium nitrate are easily separated by water molecules, leading to its dissolution.

Ammonium sulfate [(NH4)2SO4] is also a soluble salt. It is commonly used in fertilisers and in the treatment of alkaline soils. The ammonium ions (NH4+) and sulfate ions (SO4-) in ammonium sulfate are readily separated by water molecules, making it highly soluble.

Remember, the solubility of a salt can be affected by factors such as temperature and the presence of other substances. For example, increasing the temperature usually increases the solubility of a salt. However, there are exceptions to this rule, so it's always important to refer to solubility charts or experimental data when studying the solubility of different salts.