Question

A solution of sodium in liquid ammonia at $-{33}^{o}C$ conducts electricity. On cooling, the conductivity of this solution _______.

• A. decreases
• B. increases
• C. remains same
• D. becomes 0

Answer 1

The correct option is A decreases

A solution of sodium in liquid ammonia at $-{33}^{o}C$ conducts electricity. On cooling, the conductivity of this solution ...... The conductivity of the solution is due to presence of ammoniated electrons. With decrease in the temperature, the mobility of ammoniated electrons decreases due to which the electrical conductivity decreases.