Answer
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Hint: To answer this question you should have the proper knowledge of the electrolytes which include their association and dissociation in the solution and some basic knowledge of the salt bridge.
Complete answer:
Salt bridge is a U-shaped tube containing electrolytes which provides contact with the solution. The inert electrolytes such as $KCl$ and $KN{O_3}$ which have equal value of transport number of electrons or ions are used as salt bridges. This means that both assertion and reason are correct and reason is the correct explanation for assertion. Therefore, the correct option is option A. Those electrolytes whose ions do not take part in the redox reaction and do not react with other electrolytes used are known as inert electrolytes.
Note:
Inert electrolytes are also known by the other names and these are supporting electrolytes and inactive electrolytes. The main use of inert electrolytes is in the electrochemical measurements when control of electrode potential is required. The aim of this thing is to increase the conductivity of the solution.
Complete answer:
Salt bridge is a U-shaped tube containing electrolytes which provides contact with the solution. The inert electrolytes such as $KCl$ and $KN{O_3}$ which have equal value of transport number of electrons or ions are used as salt bridges. This means that both assertion and reason are correct and reason is the correct explanation for assertion. Therefore, the correct option is option A. Those electrolytes whose ions do not take part in the redox reaction and do not react with other electrolytes used are known as inert electrolytes.
Note:
Inert electrolytes are also known by the other names and these are supporting electrolytes and inactive electrolytes. The main use of inert electrolytes is in the electrochemical measurements when control of electrode potential is required. The aim of this thing is to increase the conductivity of the solution.
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