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प्रश्न
An aqueous solution of copper sulphate turns colourless on electrolysis.
Which of the following could be the electrodes?
P. anode: copper; cathode: copper
Q. anode: platinum; cathode: copper
R. anode: copper; cathode: platinum
विकल्प
Only P
Only Q
Only R
Both Q and R
उत्तर
Only Q
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संबंधित प्रश्न
Define the following term:
Cation
What is the difference between:
A cation and an anion
Name an inert electrode.
Name a positively charged non-metallic ion.
Name the electrode at which reduction occurs.
During electrolysis of an aqueous solution of sulphuric acid between platinum electrodes, two types of anions migrate towards the anode but only one of them is discharged:
- Name the two anions.
- Name the main product of the discharge of anion at the anode and write the anode reaction.
- Name the product at the cathode and write the reaction.
- Do you notice any change in colour. State why?
- Why this electrolysis, is considered as an example of catalysis?
Define the following term:
anion
Name an active electrode.
Explain why solid sodium chloride does not allow electricity to pass through?
When a molten ionic compound is electrolysed, the metal is always formed at ______ and the non-metal is formed at ______.
