what is the dispersed phase, dispersed medium and type of mayonnaise
Answers
Answer:
its liquid orrrrrrrr maybe emulsion
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Answer:
The major component in mayonnaise (oil) is forced to be fine droplets to disperse throughout the lesser amount of continuous aqueous phase (dispersed medium). Mayonnaise is known as an oil-in-water (o/w) emulsion.
Explanation:
To understand the dispersed phase, we need to understand what a colloid is. A colloid is a heterogeneous solution. In this solution, a dispersed phase is suspended in the dispersed medium. That is, the particles of the dispersed phase are present in the particles of the dispersed medium. A colloid solution does not possess a uniform mixture.
Water in starch or water in ink is an example of a heterogeneous mixture. Water is considered a dispersed medium in the above criteria, and starch or ink can be regarded as a dispersed phase. Two phases exist in this case. One step possesses finely differentiated particles suspended in a continuous medium. The stage with finely differentiated particles is called the dispersed phase. A dispersed medium consists of two media that do not mix. These two media can be different in properties altogether. Precisely, they can be a liquid, a solid or a gas. There are various everyday life examples of dispersed media. Milk, which we most probably use daily, is made up of oil drops dispersed in water. Shaving creams contain tiny airdrops of water dispersed in the air.
Difference Between Dispersed Phase and Dispersed Medium
The dispersed phase of dispersion is the discontinuous phase that distributes throughout the dispersion medium. It is one of the two stages of a colloid. The dispersion medium is the continuous phase of a colloid, and it distributes throughout the dispersion medium. The dispersed phase is known as the internal phase, whereas the dispersion medium is called the external phase. Examples of the dispersed phase include dust in the air, whereas that of dispersion medium includes water in milk.
Types of Dispersion Systems
There are two types of dispersion systems, Molecular Dispersions and Coarse Dispersions. Molecular dispersions are dedicated solutions to a solute phase in the solvent. The dispersed phase is homogeneously distributed in the dispersion medium. Examples of molecular dispersion are air (consisting of various gasses like nitrogen and oxygen), electrolytes, and alloys.
The second type of dispersion medium is of the coarse kind. These are heterogeneous dispersed systems. Fast sedimentation of the dispersed phase is observed owing to the coarse dispersions, mainly due to gravity.
Dispersed Phase: Classification and Types
Based on the type of dispersed phase, colloids can be classified into various types. These include sol, emulsion, foam, and aerosol. A colloidal suspension of solid particles in a liquid is called a sol, e.g., Ruby glass. An emulsion is a colloidal suspension of two drinks, e.g., milk. Foam is formed when gas particles get trapped in a liquid or solid, e.g., soap in water. Aerosols are small particles of liquid or solid dispersed in a gas, e.g., smoke, fog, mist, etc.
Depending upon the minute particles' nature of the dispersed phase, the colloids are mainly differentiated into three types:
Multimolecular colloids
Macromolecular Colloids
Associated Colloids
Multimolecular Colloids
When a substance gets dissolved in a dispersion medium, it gets separated into several smaller molecules of different sizes. Usually, their size varies from 1-1000nm. After the separation of the particles, the colloid constitutes several atoms and molecules known as multimolecular colloids.
Example: Hundreds of Sulfur molecules are held together by van der Waals force and form Sulfur Solution.
Macromolecular Colloids
Its size is relatively more. However, in a suitable solvent, these form solutions whose size may or may not remain in the colloidal range. This arrangement is popular as Macromolecular Colloids.
Example: Enzymes, cellulose, and proteins are naturally formed macromolecular colloids, but rubber and polythene are synthesized.
Associated Colloids
Basically, these are behaving like strong electrolytes. However, when a suitable condition like in higher concentration, they show the behavior of colloidal particles. Because of this nature, these are known as Associated Colloids and also famous as a micelle.
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