Potassium chloride is added to water and stirred. A salt solution is obtained which is then boiled leaving behind a residue.
Is the above change physical or chemical

Potassium chloride is added to water and stirred. A salt solution is obtained which is then boiled leaving behind a residue. Is the change reversible or not reversible

Potassium chloride is added to water and stirred. A salt solution is obtained which is then boiled leaving behind a residue. Give a reason why the above experimentation would not be possible, if calcium carbonate is taken, in place of potassium chloride.

Potassium chloride is added to water and stirred. A salt solution is obtained which is then boiled leaving behind a residue. Name the residue which remains behind after the salt solution is boiled

Potassium chloride is added to water and stirred. A salt solution is obtained which is then boiled leaving behind a residue. Are the composition and properties of the original substance altered

Salts M, N, O, P and Q undergo reactiom (i) to (v) respectively. Identify the cation present in these salts on the basis of these reaction. Tabulate your answer in the format given below. 1. When sodium hydroxide solution is added to the salt M, and heated strongly a colourless gas with a pungent smell is evolved which turm red litmus paper blue and gives dense white fumes with a moist glass rod with hydrochloric acid. 2. Addition of dilute hydrochloric acid to a solution of N gives a thick white precipitate which is soluble in hot water. 3. When ammonium hydroxide solution is added to the solution of 0 a light blue precipitate is obtained which is soluble in excess of ammonium hydroxide to form an inteme deep blue solution. 4. When ammonium hydroxide solution is added to the solution of P reddish brown (mustard colour) precipitate is obtained which ,is insoluble even in the excess of ammonium hydroxide solution. 5. When sodium hydroxide solution is added to the solution of Q a which coloured gelatinous precipitate is obtained which is soluble in excess of sodium hydroxide to form a clear solution

A. Potassium nitrate B. Lead nitrate C. Ammonium nitrate. Choose the chemicals from A, B and C to answer the following questions when they are heated. (a) The chemical which leaves behind no residue. (b) The chemical which gives oxygen as the only gas. (c) The chemical which produces nitrogen dioxide.

When chlorine water is added to an aqueous solution of potassium halide in the presence of chloroform, a colour is developed but on adding more of chlorine water the colour disappears, and a colourless solution is obtained.This test confirms the presence of the following in aqueous solution.

FeC_3 is added separately to excess of boiling water and excess of NaOH solution, the sols obtained contain respectively the disperse particles to be :

A compound containing acetate radical is made to react with neutral ferric chloride. The solution is then diluted with water and boiled for 1-2 minutes. A reddish brown precipitate is obtained.Give the chemical composition of reddish brown precipitate.

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained : (a) Write a balanced chemical equation for the reaction involved. (b) What other name can be given to this precipitation reaction (c) On adding dilute hydrochloric acid to the reaction mixture, white precipitate disappears. Why ?