Coagulation class 12

Coagulation techniques:.

Coagulation is a process that involves colloidal particles coming together to form larger particles that eventually settle as residue or float on the surface. Coagulation is the transformation of blood from a liquid to gel, resulting in the formation of blood clots. It could lead to hemostasis or the cessation of blood loss from a damaged vessel and then repair. The addition of electrolytes usually causes coagulation to take place. The coagulating ion, also known as a flocculating ion, is the ion that is responsible for neutralising the charge on colloidal particles.

Coagulation class 12

What is blood coagulation? What is coagulation process? Which will not coagulate. What is the coagulation process? What is the "coagulation" process? Which is an example of coagulation? What are emulsions? Give an example of an emulsion. Describe briefly the cleansing action of soap. Define adsorption isotherm and explain Freundlich adsorption isotherm What is coagulation? Explain the various factors which influence coag Explain the various factors which influence coagulation. View Text Solution. Text Solution.

What is the coagulation value of KCl? Get all the important information related to the NDA Exam including the process of application, syllabus, eligibility criteria, exam centers etc. Hydrochloric Acid Formula, coagulation class 12.

Coagulation flocculation in water treatment involves the addition of compounds that promote the clumping of fines into larger flocs, allowing them to be more easily separated from the water. Coagulation is a chemical process that involves charge neutralisation, whereas flocculation is a physical process that does not involve charge neutralisation. Coagulation-flocculation can be used as a preparatory or intermediate step between other water or wastewater treatment processes such as filtration and sedimentation. Although iron and aluminium salts are the most commonly used coagulants, salts of other metals such as titanium and zirconium have also been found to be highly effective. The type of coagulant used, its dose and mass; the pH and initial turbidity of the water being treated; and the properties of the pollutants present all have an impact on coagulation. Because colloidal particles have surface electrical charges that repel each other, particles settle very slowly or not at all in a colloidal suspension. This surface charge is commonly measured in terms of zeta potential, which is the electrical potential at the slipping plane.

The ions of the electrolytes are adsorbed on the sol. For example: In the presence of a large excess of the electrolyte, the charge on the particles of the dispersed phase is neutralised and as a result, they come closer, grow in size and ultimately form precipitates. Thus, the phenomenon of precipitation of a colloidal solution by the addition of excess of an electrolyte is called coagulation or flocculation. When an electrolyte is added to the sol. As a result, their charge gets neutralised and this causes the uncharged particles to come closer and to get coagulated or precipitated. This leads to coagulation.

Coagulation class 12

Colloids are an important class of heterogeneous mixtures which are formed by mixing dispersed phase with the dispersion medium. Most substances like creams, milk, curd, and medicines are colloids. Colloids show special features like the Tyndall effect and the Brownian movement. In this article, there is a detailed discussion about the coagulation of colloids. Coagulation is a process of aggregation or accumulation of colloidal particles to settle down as a precipitate. Substances like metals, their sulfides etc cannot be simply mixed with the dispersion medium to form a colloidal solution. Some special methods are used to make their colloidal solutions. Such kinds of sols are known as lyophobic sols. These kinds of colloidal solutions always carry some charge on them.

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Plasma contains fibrinogen and other inactive blood clotting factors. Frequently Asked Questions. Test your Knowledge on Coagulation of colloidal solutions! Chemical Reaction Examples. View Text Solution. How are Lyophilic and Lyophobic Sol different? NDA Examination Scheme. No Yes. View Result. The coagulant is quickly added to the water and mixed during this process, allowing it to disperse throughout the entire sample of water. If we can remove the charge present on the sol, the particles get closer to each other, and they accumulate to form aggregates and precipitate under the action of gravity. Which is an example of coagulation?

Coagulation techniques:. Byju's Answer.

Lyophilic colloids are more difficult to coagulate than lyophobic colloids. Calcium ions are essential in blood coagulation. Causes of Coagulation Coagulation of Lyophobic Sol can be caused by the following: By Prolonged Dialysis: The presence of a small quantity of electrolyte in a colloidal sol gives it stability. The most common coagulant used for water purification is aluminium sulphate alum. Answer: To make yoghurt, we add a small amount of acid to the milk, which changes the pH of the milk, and makes it acidic, forming negative charges in the milk colloid. A minor stick is felt by the majority of people. As a result, this charge gets neutralised, and the uncharged particles become coagulated. Describe briefly the cleansing action of soap. If we can remove the charge present on the sol, the particles get closer to each other, and they accumulate to form aggregates and precipitate under the action of gravity. Talk to our academic expert! Explain the various factors which influence coag