Advertisements
Advertisements
प्रश्न
When fused lead bromide is electrolysed, we observe ______.
विकल्प
A silver grey deposit at the anode and a reddish brown deposit at the cathode.
A silver grey deposit at the cathode and a reddish brown deposit at the anode.
A silver grey deposit at the cathode and reddish brown fumes at the anode.
Silver grey fumes at the anode and reddish brown fumes at the cathode.
उत्तर
When fused lead bromide is electrolysed, we observe a silver grey deposit at the cathode and reddish brown fumes at the anode.
APPEARS IN
संबंधित प्रश्न
Identify the substance underlined, in the following case
The particles present in a liquid such as kerosene, that is a nonelectrolyte.
Differentiate between the terms strong electrolyte and weak electrolyte. (stating any two differences)
Substances which conduct electricity in the solid state are generally ______.
Define the following term:
Weak electrolytes
Name a non-metallic element which is a conductor of electricity.
Make a neatly labeled sketch to show how a brass spoon can be plated with silver. Explain your choice of electrolyte used.
Explain the term : Anode mud
What particles are present in pure lead bromide?
The following is an extract from metals in the service of man, Alexander and street /Pelican 1976': Alumina (aluminium oxide) has a very high melting point over 2000oC, so that I cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, an occur when it is dissolved in some other substance.
(a) Which solution is used to react with bauxite as first step in obtaining pure aluminium oxide?
(b) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the equation for this reaction.
(c) Name the element which serves both as the anode and the cathode in the extraction of aluminium.
(d) Write the equation for the reaction that occurs at the cathode during the extraction of aluminium.
(e) Write the equation for the reaction that occurs at the cathode during extraction of aluminium by electrolysis.
(f) Give the equation for the reaction that occurs at the anode when aluminium is purified by electrolysis.
State the observation at the anode and at the cathode during the electrolysis of :
Fused lead bromide using graphite electrodes
