Bissoy.com
Doctors Medicines MCQs Q&A

What happens when the ferric chloride solution is added to freshly precipitated ferric hydroxide?

What happens when the ferric chloride solution is added to freshly precipitated ferric hydroxide? Correct Answer Brown coloured colloid

When ferric chloride solution is added to freshly precipitated ferric hydroxide, a brown coloured colloidal solution is obtained. This happens due to the adsorption of ferric ions on the surface of precipitate. The accumulation of ferric ions on the surface causes repulsion between them and results in the fragmentation of large precipitate particles into small colloidal particles.

Related Questions

There are two beakers with the first containing sodium hydroxide solution and the other beaker has twice the quantity of water. To prepare a solution, 60 ml of sodium hydroxide is added to the water beaker. Three fourth of the prepared solution is again added to the first beaker. After this the first beaker has 3.5 times the solution in the water beaker. How much was the initial amount of sodium hydroxide?
A chemical solution appears green when the salt concentration is 8 grams per litre (gpl) and red when it is 10 gpl. Pure water was added to the solution of 1 litre of 15 gpl solution till it turned green. Then 125 ml of the green solution is taken out and x grams of salt is added to the green solution to make it red. Another 500 ml of the final solution was taken out and y litres of green solution is added to get a resultant solution of concentration 9.6 gpl.  Assume adding salt doesn’t change its volume and find the ratio of x and y. 
Consider the following statement- I. Sodium hydroxide is used to remove grease stains from cloths. II Calcium hydroxide is used in the manufacture of wax. III. Ammonium hydroxide is used in the white washing of buildings. IV. Magnesium hydroxide is used as a medicine for stomach troubles.
Which among the following statements is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to 1. the formation of silver by decomposition of silver chloride 2. sublimation of silver chloride 3. decomposition of chlorine gas from silver chloride 4. oxidation of silver chloride Select the correct answer using the codes given below.
A 60% spirit solution is mixed with r% spirit solution in the ratio 1 : 3 such that a s% spirit solution is obtained. When a (s/3)% spirit solution is mixed with 55% spirit solution in equal ratio, an (r/2)% spirit solution is obtained. Which of the following can be determined? (A) Value of ‘r’ (B) Value of ‘s’ (C) Volume of the 60% spirit solution mixed initially (D) If 9 liters of r% spirit solution was mixed initially, what was the volume of the s% spirit solution thus obtained?
In the general phase diagram of Ferric chloride – water system, what causes reduction in water content in ferric chloride at each step?
Lake water contains phosphate ions. Which specie would be formed if ferric ions in form of ferric chloride are added in lake water?
Hydroxide Ion concentration in calcium hydroxide and barium Hydroxide is an example of ______________ solution.
Suppose you have four test tubes labelled as 'A', 'B', 'C' and 'D'. 'A' contains plain water, 'B' contains solution of an alkali, 'C' contains solution of an acid, and 'D' contains solution of sodium chloride. Which one of these solution will turn phenophthalein solution pink?
When we add aluminium foil to freshly prepared sodium hydroxide solution a gas is produced. Which of the following correctly states the property of this gas ?