Question

Products formed when chlorine is produced by the electrolysis of concentrated sodium chloride solution

Answer 1

The products formed during electrolysis of concentrated sodium chloride solution are SODIUM HYDROXIDE and HYDROGEN GAS.

ELECTROLYSIS is the process by which electrolytes allows electric current to pass through it and is decomposed on the process.

CHLORINE is an element which can be produced industrially through the process of electrolysis of brine (concentrated sodium chloride solution). When sodium chloride is dissolved in water, it's ions separate and are capable of conducting electricity.

The products formed during this process includes:

• chlorine

• sodium hydroxide and

• hydrogen gas.

CHLORINE: this is released at the positive electrode during electrolysis. It is used for the following purposes:

•  it is used for sterilisation of water for domestic and industrial use

•  it is used as a bleaching agent for cotton, linen and wood-pulp.

SODIUM HYDROXIDE: this remains in the solution during electrolysis. It is used for the following:

• processing food products,

• removing pollutants from water and

• manufacture of paper.

HYDROGEN GAS:this is released at the negative electrode during electrolysis. this is used for the following:

• manufacture of ammonia, hydrochloric acid and methanol

• it serves as constituents of many gaseous fuels such as water gas and coal gas

Therefore other products during electrolysis of concentrated sodium chloride solution are SODIUM HYDROXIDE and HYDROGEN GAS.

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