Question

why does the bulb does not glow when the conducting liquid is a weak electrolyte​

Answer 1

since it is a weak electrolyte electrons flow through it slowly and the bulb does not glow....

Answer 2

Answer :

Before coming to the main answer firstly let's know what is Electrolyte

$\star$ A compound,that conducts electricity in molten (fused) or aqueous (solution) state,and which simultaneously undergoes decomposition (breaking into ions) when an electric current passes through it,is an Electrolyte.

$\star$ The molecules of salts,acids and bases,on being dissolved in water,are known to break up into free (positive and negative) Mobile ions. These free Mobile ions allow the passage of electric current through the solution,making it conductive. We call such solutions as Electrolytes

Now The Question is :

Why the bulb does not glow when the conducting liquid is a weak electrolyte ?

$\hookrightarrow$ Weak Electrolytes doesn't let bulb glow as that Electrolytes get ionised only partially to form free Mobile ions Hence only a small number of free mobile ions are available in them to conduct electricity. Thus,the bulb didn't glow at all.

Examples of Some Weak Electrolytes :

● Ordinary Tap water

● Oxalic Acid

● Carbonic Acid

● Ammonium Hydroxide

● Citric Acid