What happens when AQ NaCl is Electrolysed?
When an electric current is passed through concentrated sodium chloride solution, hydrogen gas forms at the negative electrode , chlorine gas forms at the positive electrode, and a solution of sodium hydroxide also forms.
Why does an aqueous solution of NaCl on electrolysis?
This is because of the fact that standard reduction potential of water is greater than that of sodium.
Can sodium be extracted by electrolysis of aqueous NaCl?
Answer. An aqueous solution of sodium chloride is not used for electrolysis because aqueous solution contains water as well which results in the formation of sodium hydroxide in the solution and sodium metal is not obtained. Hence molten sodium chloride is used to extract sodium from sodium chloride.
What is electrolysis of NaCl called?
Why is the electrolysis of a concentrated solution of sodium chloride known as Chlor-alkali process?
What happens when aqueous solutions are electrolysed using inert electrodes?
This investigation looks at what happens to aqueous solutions when they are electrolysed using inert electrodes. An aqueous solution is one in which the solvent is water. In all cases where aqueous solutions are electrolysed, water will also be electrolysed, producing hydrogen ions and hydroxide ions.
Which gas is evolved at cathode when aqueous solution of NaCl is Electrolysed?
chlorine gas
1) In the electrolysis of molten NaCl, sodium is deposited at the cathode while chlorine gas is liberated at anode.
Which is prepared in industry by electrolysis of aqueous NaCl?
The net process is the electrolysis of an aqueous solution of NaCl into industrially useful products sodium hydroxide (NaOH) and chlorine gas.
What is the difference between molten and aqueous electrolysis?
The key difference between molten and aqueous electrolysis is that molten electrolysis produces elements of the analyte, whereas aqueous electrolysis produces an aqueous salt solution and a mixture of gases as the final product.
What are the product of electrolysis of aqueous NaCl?
The product of electrolysis of concentrated aqueous sodium chloride are sodium hydroxide, hydrogen gas and chlorine gas.
When aqueous solution of NaCl is Electrolysed the product obtained at cathode is a hydrogen B sodium metal C oxygen D chlorine?
If an aqueous solution of NaCl is electrolysed, the product obtained at the cathode is H2 gas and not Na .
What is electrolysis of aqueous solutions?
It’s an electro-chemical process where current is passed between two electrodes through an ionized solution (the electrolyte) to deposit positive ions (anions) on the negative electrode (cathode) and negative ions (cations) on the positive electrode (anode).
What is electrolysis of brine?
The electrolysis of brine is a large-scale process used to manufacture chlorine from salt. Two other useful chemicals are obtained during the process, sodium hydroxide (NaOH) and hydrogen (H2).