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प्रश्न
What is the difference between:
A cation and an anion
उत्तर
| Cations | Anions | |
| (1) | They are positively charged ions. | They are negatively charged ions. |
| (2) | Migrate to the cathode during electrolysis. | Migrate to the anode during electrolysis. |
| (3) | Gain electron(s) from the cathode and get reduced to become a neutral atom. | Lose electrons to the anode and get oxidised to become a neutral atom. |
| (4) | Examples: Na+, Ca2+, Al3+ | Examples: \[\ce{PO^3-_4}\], Cl−, \[\ce{SO^2-_4}\], OH− |
APPEARS IN
संबंधित प्रश्न
Define the following term:
Cation
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 ______.
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
