What Is Coagulating Power Or Flocculating Power

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Hint: Flocculating value or the coagulating value is the amount of the electrolyte which is needed so that 1 litre of colloidal solution precipitates easily. The coagulating power or flocculating power is the reciprocal of coagulating value or flocculating value.

Is coagulation power and flocculation Power same?

The minimum amount of an electrolyte required to cause precipitation of one litre of a colloidal solution is called coagulation value or flocculation value of the electrolyte for the sol. The reciprocal of coagulation value is regarded as the coagulating power.

What is coagulating value or flocculating value?

The minimum concentration of an electrolyte which is required to cause coagulation is known as coagulating value of sol. It is usually expressed in terms of milli-moles per litre. Coagulation power is inversely proportional to coagulation value.

What is flocculating value?

Flocculation value is defined as the minimum concentration required of an electrolyte to cause the coagulation or flocculation of a solution. Flocculation value is inversely proportional to the coagulating power of the ion.

What is the difference between coagulating power and coagulating value?

Complete answer: The minimum concentration of electrolyte in millimoles required to cause coagulation of one litre of colloidal solution is called coagulation value. Coagulation power is inversely proportional to coagulation value. Hence the option 2 is correct.

What is the flocculating power?

Which has maximum flocculation power?

Lower the coagulation value, more efficient is the electrolyte in causing coagulation of sol. We can say coagulation value is inversely proportional flocculation value. having lowest charge will have minimum power and hence have maximum flocculation value. Thus, the correct option is C.

What is hardy Schulze rule?

> Hardy Schulze rule states that the amount of electrolyte required for the coagulation of a definite amount of a colloidal solution is dependent on the valency of the coagulating ion. Hardy and Schulze observed that greater the valency of the flocculating ion or coagulating ion, the greater is its power to coagulate.

How do you calculate flocculating value?

Complete step by step solution: “The minimum concentration of an electrolyte that is required to cause the coagulation or flocculation of a sol is known as flocculation value.” It is expressed in terms of millimoles per litre. 2 mL of 1 M NaCl contains 2 / 1000 mol = 2 millimole.

What is Coagulative value?

The precipitation of colloidal solution through induced aggregation by the addition of suitable electrolyte is called coagulation or flocculation. The minimum concentration of an electrolyte required to cause coagulation is known as coagulating value of sol.It is usually expressed in terms of milli-moles per litre.

Is soap a sol?

A sol is a combination of a solid that is evenly dispersed throughout a fluid. Since, in Soap dispersion medium is liquid and dispersed phase is gas. And after going through the classification of colloidal solution as written above, we can simply conclude that Soap is an example of Foam.

Which has minimum flocculation value?

The minimum concentration of an electrolyte required to cause coagulation of a sol is called its flocculation value. It is expressed in millimoles per litre. If the flocculation value of MgSO4 for standard As2S3 sol is 3.33.

What is Tyndall effect?

Tyndall effect, also called Tyndall phenomenon, scattering of a beam of light by a medium containing small suspended particles—e.g., smoke or dust in a room, which makes visible a light beam entering a window. The effect is named for the 19th-century British physicist John Tyndall, who first studied it extensively.

How do you find coagulating powers?

So, according to this rule, greater the charge on an oppositely charged ion, greater is its coagulation power. Since arsenic sulphide is a negatively charged sol, thus, the order of coagulating power is $N{a^ + } < B{a^{2 + }} < A{l^{3 + }}$. Thus, option A is the correct option.

How coagulation can be brought about?

(1) By electrophoresis: In electrophoresis the colloidal particles move towards oppositely charged electrode. Coagulation is generally brought about by the addition of electrolyte. Charge ; Solvation; When the above two factors are removed then only lyophilic sols can be coagulated.

Which has higher coagulating value?

To find : Which one has higher coagulating power. solution : coagulating value : The minimum concentration of an electrolyte which is required to cause coagulation is known as coagulating value. coagulating value is inverse of coagulating power. i.e., lower the coagulating value, higher is the coagulating power.

Is gelatin a positive sol?

Gelatin is positive sol.

What is difference between coagulation and flocculation?

Coagulation: Particles that aggregate with themselves e.g. by the influence of a change in pH. Flocculation: Particles that aggregate by the use of polymers that binds them together.

Is Gold sol positive or negative?

Metal sols are generally negatively charged. Therefore, gold sol is also a negative charged sol.

Is Congo Red sol a positively charged sol?

Based on the nature of the charge on the colloidal particles, colloidal solutions are classified as positively charged or negatively charged sols. Starch sol, metal sols like copper sol and gold sol, metal sulphide sols and acid dyes like Congo red, are examples of negatively charged sols.

Which is decreasing order of coagulation power?

The coagulation power of an electrolyte for blood decreases in the order: A. Na+,Al3+Ba2+ B. PO43−,SO42−,Cl− C. Al3+,Ba2+,Na+ D. Cl−,SO42−,PO43−.

Which of the following will have highest flocculating power for ferric hydroxide colloid?

According to the above stated rule, Cryolite$\left( {N{a_3}Al{F_6}} \right)$has the maximum coagulating power to coagulate a positive solution of ferric hydroxide because Cryolite has the highly charged opposite ion. So, the correct answer is Option A.

What is hardy Schulze rule Explain with examples?

The coagulating or flocculate capacity of an electrolyte increases with increase in charge is known as Hardy – Schulze law. Example 1: To coagulate a negative sol, the coagulating capacity of positive ion is Al+3 > Mg+2 > Na+ Example 2: To coagulate a positive sol the coagulating capacitor of negative ion.

What is modification in Hardy Schulze law?

Thus, Hardy-Schulze law can be modified in terms of the polarising power of the flocculating ion. Thus, the modified Hardy-Schulze law can be stated as ‘the greater the polarising power of the flocculating ion added, the greater is its power to cause precipitation. ‘.

Why are colloidal solutions Coloured?

Larger particles absorb the light of longer wavelength and therefore transmit light of shorter wavelength. The colour of a colloidal solution depends upon the size of colloidal particles present in it. Larger particles absorb the light of longer wavelength and therefore transmit light of shorter wavelength.