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  • In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus (Figure 2.1) was set up. Which among the following statement(s) is(are) correct? (i) Bulb will not glow because electrolyte is not acidic

In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus (Figure 2.1) was set up. Which among the following statement(s) is(are) correct?

(i) Bulb will not glow because electrolyte is not acidic

(ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction.

(iii) Bulb will not glow because circuit is incomplete

(iv) Bulb will not glow because it depends upon the type of electrolytic solution

(a) (i) and (iii)           (b) (ii) and (iv)

(c) (ii) only                 (c) (iv) only

Answers (1)

Answer: (c)

An electric circuit is a path in which the electrons flow from voltage or current source. The electric current streams in a closed path.

Bulb will glow because NaOH being a strong base furnishes OH^{-} and Na^{+} ions (which are responsible for electrical conductivity).

Sodium hydroxide conducts electrons as sodium cations and hydroxyl anions. The particles move towards the two iron nails in the arrangement going about as cathode(- ) for getting cations and other as anode(+) for getting anions.

 

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