Advertisements
Advertisements
Question
Give appropriate scientific reasons for the following statement:
During electrolysis of molten lead bromide, graphite anode is preferred to other electrodes.
Solution
In the electrolysis of molten lead bromide, reactive bromine is liberated at the anode. As bromine is very reactive, an inert electrode like graphite is preferred.
APPEARS IN
RELATED QUESTIONS
Identify the substance underlined, in the following case
The particles present in a liquid such as kerosene, that is a nonelectrolyte.
Name the product formed at the anode during the electrolysis of acidified water using platinum electrodes.
Choosing only words from the following list, write down the appropriate words to fill in the blanks (a) to (e) below:
anions, anode, cathode, cations, electrode, electrolyte, nickel, voltameter.
The electroplating of an article with nickel requires an (a) ______ which must be a solution containing (b) ______ ions. The article to be plated is placed as the (c) ______ of the cell in which the plating is carried out. The (d) ______ of the cell is made from pure nickel. The ions that are attracted to the negative electrode and discharged are called (e) ______.
Amongst the OH- ions and Br- ions which are likely to discharge first?
How is the passage of electricity through an electrolyte different from the passage of electricity through a copper wire?
If a fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
Three different electrolytic cells, A, B and C are connected in separate circuits. Electrolytic cell A contains a sodium chloride solution. When the circuit is completed, a bulb in the circuit glows brightly. Electrolytic cell B contains an acetic acid solution and in this case, the bulb in the circuit glows dimly. The electrolytic cell C contains a sugar solution and the bulb does not glow. Give a reason for each of these observations.
Fill in the blank from the choices given below :
In covalent compounds, the bond is formed due to the ______ of electrons.
Which of these will act as a non-electrolyte?
Identify the substance underlined in each of the following case :
he electrolyte used for electroplating an article with silver.
