Give reasons:
1. Copper of high grade purity is obtained almost exclusively by electrolytic refining.
2. Sodium and potassium are generally not refined by electrolytic methods.
a) Name a metal which forms a strong electrolyte on reaction with water.
Thank you for helping me out. I really appreciate it.
Give reasons:
1. Copper of high grade purity is obtained almost exclusively by electrolytic refining.
2. Sodium and potassium are generally not refined by electrolytic methods.
a) Name a metal which forms a strong electrolyte on reaction with water.
Thank you for helping me out. I really appreciate it.
1. Electrolytic refining is a process in which pure metals are obtained from impure metals. This is considered as one of the most convenient and exclusive methods of refining and gives a metal of very high purity.
Copper is mainly used for electrical conductance. The presence of impurities even in small quantity will decrease the electrical conductivity of Copper. As we require very very pure form of copper for use in electricity, we under go electrolytic refining method where we obtain 99.99% pure copper.
2. Actually, sodium and potassium are generally refined by electrolysis method. As alkali metals are the strongest reducing agents, they cannot be prepared by chemical reduction of their oxides. They are generally obtained by the electrolysis of fused halide (sodium from sodium chloride and calcium chloride in fused state) and potassium from fused potassium hydroxide with impurities added to lower melting point.
3. All compounds of alkali metals (Li+, Na+, K+) are soluble and form strong electrolytes.
1. Electrolytic refining is a process in which pure metals are obtained from impure metals. This is considered as one of the most convenient and exclusive methods of refining and gives a metal of very high purity.
Copper is mainly used for electrical conductance. The presence of impurities even in small quantity will decrease the electrical conductivity of Copper. As we require very very pure form of copper for use in electricity, we under go electrolytic refining method where we obtain 99.99% pure copper.
2. Actually, sodium and potassium are generally refined by electrolysis method. As alkali metals are the strongest reducing agents, they cannot be prepared by chemical reduction of their oxides. They are generally obtained by the electrolysis of fused halide (sodium from sodium chloride and calcium chloride in fused state) and potassium from fused potassium hydroxide with impurities added to lower melting point.
3. All compounds of alkali metals (Li+, Na+, K+) are soluble and form strong electrolytes.
