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General Principles and processes of Isolation of Elements
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$Na_2SO_4$ ના દ્રાવણ ને જળમાં નિષ્ક્રિય ઇલેક્ટ્રોડ્સનો ઉપયોગ કરીને ઇલેક્ટ્રોલાઇઝ્ડ કરવામાં આવે છે તો એનોડ અને કેથોડ પર કઈ નીપજ મળશે.
A
$O_2,\,H_2$
B
$O_2,\,Na$
C
$H_2,\,O_2$
D
$O_2,\,SO_2$
Solution
A solution of sodium sulphate in water is electrolysed using inert electrodes. The products at the cathode and anode are $\mathrm{H}_{2}, \mathrm{O}_{2}$ respectively. Hydrogen ions having lower discharge (or higher reduction) potential than sodium ions will be liberated at the cathode.
$2 \mathrm{H}^{+}+2 \mathrm{e}^{-} \rightarrow \mathrm{H}_{2} \uparrow$
Hydroxide ions having a lower discharge potential than sulphate ions, will be liberated at anode.
$4 \mathrm{OH}^{-} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}+4 \mathrm{e}^{-}$
Standard 12
Chemistry
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