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Therefore, flocculation value of NaCl = 4.
How do you find the flocculation value of NaCl?
Explanation: Coagulation value is the millimoles of an electrolyte that must be added to 1 L of a colloidal solution for complete coagulation . Therefore , 5 mL of 1 M NaCl = 11000×5=0.005 or 5 m moles .
What is the flocculation value of NaCl when 5 mL?
For the coagulation of 100 ml of arsenious sulphide solution, 5ml of 1M NaCl is required. Calculated the flocculation value . The minimum number of moles of electrolyte per litre required to cause precipitation is called flocculation value. Flocculating value of NaCl is 50 millimole L-1.
What is the coagulation value of NaCl?
Answer: The coagulation value of NaCl is 50 .
What is flocculation 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 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 flocculation?
It is calculated by dividing the liquid volume (in gallons) of a basin by the plant flow rate (gallons per minute).
What is the formula for finding gold number?
Gold number is calculated by know the number of milligrams of protective colloid which is sufficient to prevent the coagulation of 10 ml of standard gold solution when 1 ml of 10% solution of sodium chloride is added to it.
What are floc particles?
Flocculation is a two-step particle aggregation process in which a large number of small particles form a small number large flocs. Step 1: Coagulation. Small particles usually carry negative surface charges that hinder aggregation and settling (1a).
What is gold number in surface chemistry?
The Gold Number is the minimum weight (in milligrams) of a protective colloid required to prevent the coagulation of 10 ml of a standard hydro gold sol when 1 ml of a 10% sodium chloride solution is added to it. It was first used by Richard Adolf Zsigmondy.
Which of the following is best coagulated by AlCl3 than NaCl?
By hardly schulze rule, for a negatively charged sol, positively charged ion with higher oxidation state is a better coagulating agent. Since AlCl3 forms Al3+ ion and NaCl forms Na+1 only, AlCl3 is a better coagulating agent.
How many times AlCl3 has greater coagulation power than NaCl?
Compare the coagulation power of AlCl_(3) with that of NaCl . Given that their coagulation values are 0.093 and 52 respectively? Thus, AlCl3 has 559 times greater coagulation power than NaCl .
What is the flocculation value of NaCl and AlCl3?
Coagulation value of alcl3 and nacl are 0.093 and 52 .
Which has maximum flocculation value?
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.
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 hardy Schulze rule example?
– Because the charge on the aluminium +3 is very high when compared to the other ions mentioned. – This process of explanation of the coagulating capacity of an electrolyte is called hardy schulze rule. – Another example for hardy Schulze rule is to coagulate the positive sol there is a need of a negative electrolyte.
What is hardy Schulze law explain with example?
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.
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.
What is an example of flocculation?
Flocculation and coagulation treatment chemicals are used in effluent wastewater water treatment processes for solids removal, water clarification, lime softening, sludge thickening, and solids dewatering. Examples of ChemTreat coagulation products include aluminum salts, iron salts, and polyelectrolytes.
What is the difference between flocculant and coagulant?
Coagulation is a chemical process. Flocculation is a physical process. Coagulants such as inorganic salts of aluminum or iron that neutralize the suspended particles are added during coagulation. Flocculant such as an organic polymer that involves in bridging and strengthening the flocs is added.
What is flocculation simple?
Flocculation, in physical chemistry, separation of solid particles from a liquid to form loose aggregations or soft flakes. These flocculates are easily disrupted, being held together only by a force analogous to the surface tension of a liquid.
What is the golden number of Gelatene?
The gold number of gelatin is 0.01.
What is the gold No of gelatin?
The gold number of gelatin is 0.01 .
What is gold number Class 12?
Complete answer: > The gold number is defined as the minimum mass of the colloid in milligram that is added to the 10ml of red gold sol to protect it from the coagulation when 1 ml of 10% NaCl is added. The protective power of a colloid is determined by the reciprocal of a gold number.
