Solubility – Definition and Pronunciation
What is Solubility?
The solubility of a substance in water, at a specified temperature, is the maximum weight of substance which will dissolve in a given weight of water, in the presence of undissolved substance. The value is usually expressed as the number of grams of substance dissolving in 100 grams of water. In the case of liquid dissolving in liquid, the term “miscibility” is often used instead of “solubility”. Ethanol dissolves in water at ordinary temperatures in all proportions, and is said to be completely miscible. A hydrocarbon and water, on the other hand, are immiscible. Aniline and water are partially miscible.
Examples of Solubility
Water is soluble in butadiene, particularly at high temperatures. As can be seen, on cooling water-saturated butadiene the solubility of the water decreases and water will separate out as droplets which settle as a layer in the bottom of the tank.
From “Chemical Composition and Physical Properties of Liquefied Gases”.
The high solubility of ammonia in water (300:1) can lead to dangerous vacuum conditions being created within a tank. It is, therefore, essential to ensure adequate air entry into the cargo tank during the water washing process.
From “Preparation and Execution Cargo Operations LNG and LPG”.
For ammonia sampling, the vapour displaced could be passed by hose to a water surface or spray, but precautions should be taken to prevent water being drawn back into the sample container due lo the extreme solubility of this cargo.
From “Measurement and calculation of cargo on gas carriers”.
Pronunciation of Solubility
