State one appropriate observation for: Electricity is passed through molten lead bromide.

Open in App

Solution

When the electricity is passed through molten lead bromide solution,it decomposes to form reddish-brown vapours of bromine gas and evolves at the anode.
Reaction at the anode:
$B r^{-} (a q) - e^{-} \to B r$
$B r + B r \to B r_{2}$

Suggest Corrections

Similar questions

(a) State one appropriate observation for: Electricity is passed through molten lead bromide.

(b) State which of these will act as a non-electrolyte

(i) Liquid carbon tetrachloride

(ii) Acetic acid

(iii) Sodium hydroxide aqueous solution

(iv) Potassium chloride aqueous solution

(i) Which electrode to your left or right is known as the oxidising electrode and why ?

(ii) Write the equation representing the reaction that occurs.

(iii) State two appropriate observations for the above electrolysis reaction.

(d) Identify : A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water.

(a) State observation at the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.

(b) During electrolysis of molten lead bromide, graphite anode is preferred to other electrodes. Give reason.

State one appropriate observation for the following:
Electricity is passed through molten lead bromide.

P b

Join BYJU'S Learning Program

Explore more

Join BYJU'S Learning Program