Question

Conductivity of NaCl, is it more?
A. In an aqueous solution than in alcohol.
B. In alcohol than in an aqueous solution.
C. Both in aqueous solution and in alcohol.
D. Nome of the above.

Answer 1

Hint: Initially, this question gives the knowledge about the strong electrolytes. Strong electrolytes are the chemical species which gets dissociated completely when dissolved in polar solvents like water.

Complete step by step answer:
$NaCl$ is a strong electrolyte and dissociates completely when dissolved in polar solvents such as water. The reaction between sodium chloride and water is as follows:
$NaCl + {H_2}O \to N{a^ + } + C{l^ - }$
Here, water is a polar solvent and leads to the complete dissociation of $NaCl$ into chloride ions and sodium ions. The electrical conductivity of $NaCl$ is due to the presence of sodium and chloride ions. When alcohol is compared with water in terms of polarity, alcohol turns out to be less polar than water. Therefore, very less number of current carriers are present in the alcohol solution.
Hence, conductivity of $NaCl$ is more in an aqueous solution than in alcohol.

Additional information: Electrolytes are the chemical species which leads to an electrically conducting solution when dissolved in polar solvents and splits into cations and anions in the solution. Electrolytes are of two types which are as follows:
-Strong electrolytes
-Weak electrolytes. .
Strong electrolytes are the chemical species which gets dissociated completely when dissolved in polar solvents like water. Examples are $NaCl$ and $HCl$ .
Weak electrolytes are the chemical species which gets dissociated partially when dissolved in polar solvents like water. Examples are $C{H_3}COOH$ and $C{H_3} COONa$.

Note:
Always remember the difference between strong and weak electrolytes. Also consider the examples of strong and weak electrolytes. The dissociation constant for strong electrolytes is equal to $1$ and for the weak electrolytes is less than one.