Electrolysis

Q.

Which of the following is true for electrochemical Daniel cell?

1. Electrons flow from copper electrode to zinc electrode.
2. Current flows from zinc electrode to copper electrode.
3. Cations move towards copper electrode.

4. Anions move towards copper electrode.

Q. In the given reaction, Mg + 2HCl Gives MgCl2 + H2 Calculate the volume of hydrogen released from 18g of magnesium

Q.

If molten magnesium chloride is electolysed, suggest a suitable electrode [anode].give reason

Q.

In a Galvanic cell, what happens when current is passed through the solution of an electrolyte?

1. Anions and cations both move towards anode.

2. Anions move towards anode, cations towards cathode.

3. Anions move towards cathode, cations towards anode.

4. Anions and cations both move towards cathode.

Q. What is the difference between electrophoresis and electrolysis?

Q.

The Anion Which Discharges at Anode With Great Difficulty is - ----------------------- Ions.

Q.

Why is graphite electrode used as anode in electrolyses of molten magnesium chloride

Q. During the electrolysis of an aqueous solution of any ionic compound, the cations move towards the anode of the electrolytic cell.

1. True
2. False

Q. Question 8
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?

Q. Choose the correct option regarding the chlor-alkali process.

1. Brine solution decomposes on the application of electricity.
2. $\mathrm{NaCl}$ is formed as a product in the cell.

3. $H_2$ is obtained at the anode.

4. ${\mathrm{Cl}}_2$ is obtained at the cathode.

Q. calculate the volume of hydrogen released from 18 g of magnesium in the following reaction Mg + 2HCl ====MgCl2 +H2 liberated

Q.

What is electrolysis?

Q. What are the constituent of ink (that we use)?

1. Dye as solvent, Water as solute.
2. Water as solvent, Dye as solute
3. None of the above
4. Depends on the concentration

Q. Which of the following statements is true about electrolytes?

1. Electrolytes are always in solution.
2. Electrolytes are made of strong acids and bases.
3. An electrolyte always needs to be ionic in nature.
4. An electrochemical cell always needs an electrolyte.

Q.

The anode of an electrochemical reaction involves ___________

1. oxidation
2. reduction
3. neutralization
4. catenation

Q. An element A burns with golden flame in air. It reacts another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reaction involved.