(B) During the electrolysis of concentrated aqueous $NaCl$ (brine),the following reactions occur:At the cathode: $2H_2O(l) + 2e^- \rightarrow H_2(g) +

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(B) During the electrolysis of concentrated aqueous $NaCl$ (brine),the following reactions occur:At the cathode: $2H_2O(l) + 2e^- \rightarrow H_2(g) + 2OH^-(aq)$At the anode: $2Cl^-(aq) \rightarrow Cl_2(g) + 2e^-$The net reaction is: $2NaCl(aq) + 2H_2O(l) \rightarrow 2NaOH(aq) + Cl_2(g) + H_2(g)$Since $NaOH$ is a strong base,the resulting solution is basic in nature.Therefore,it turns red litmus into blue.

Class 12 Chemistry Electrochemistry Electrolytes and Electrolysis

Easy

The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $NaCl$ . . . . . . .

GUJCET 2015 All GUJCET

A
turns blue litmus into red
B
turns red litmus into blue
C
remains colourless with phenolphthalein
D
the colour of red or blue litmus does not change

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Electrochemistry

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Electrolytes and Electrolysis

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The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $NaCl$ . . . . . . .

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On the electrolysis of aqueous solution of sodium sulphate,at the cathode we get:

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Why on dilution the $\Lambda_m$ of $CH_3COOH$ increases drastically,while that of $CH_3COONa$ increases gradually?

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