The teacher asked the student to prepare 200 ml 0.1 M `AgNO_3` solution. If a copper stirrer is used for stirring the solution, will you observe any changes inside the beaker. Expalin why.

Write down the preparation of 100 mL NaOH solution of 0.1 M.

5ml AgNO_3 is taken in a test tube and a co-pper rod is dipped in ti: Identify the changes occuring with the copper rod and the solution?

To a basic buffer solution 3 drops of 0.1 M HCl solution is added. Still its pH remains same. Account for the observation.

Is it safe to stir AgNO3 solution with a copper spoon (E- Ag+/Ag=0.80 V, E- Cu+/Cu=0.34 V).

A farmer prepared 1% solution of copper sulphate using iron rod as the stirrer for preparing Bordeaux mixture. Next day he notices that the blue color almost disappeared and the iron get coated with reddish brown material. b) Account for the color change of the solution.

A farmer prepared 1% solution of copper sulphate using iron rod as the stirrer for preparing Bordeaux mixture. Next day he notices that the blue color almost disappeared and the iron get coated with reddish brown material. a) What is the reddish brown material deposited on the iron rod?

A farmer prepared 1% solution of copper sulphate using iron rod as the stirrer for preparing Bordeaux mixture. Next day he notices that the blue color almost disappeared and the iron get coated with reddish brown material. c) Justify that the above phenomenon is a redox reaction.

A 4.0 molar aqueous solution of NaCl is prepared and 500mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (Atomic mass: Na= 23: Hg=200, 1 faraday= 96500 coulomb) If the cathode is a Hg electrode, the maximum weight (in g) of Na-Hg amalgam formed from this solution is

A 4.0 molar aqueous solution of NaCl is prepared and 500mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (Atomic mass: Na= 23: Hg=200, 1 faraday= 96500 coulomb) The total charge (in coulombs) required for complete electrolysis is

A 4.0 molar aqueous solution of NaCl is prepared and 500mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (Atomic mass: Na= 23: Hg=200, 1 faraday= 96500 coulomb) The total number of moles of chlorine gas evolved is