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When 965 amp current is passed through aqueous solution of salt X using platinum electrodes for 10 sec, the volume of gases liberated at the respective electrodes is in 1:1 ratio. Then X is

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MgSO₄

AgCl

MgCl₂

KNO₃

answer is C.

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Detailed Solution

Total charge passed = i x t = 965 X 10 =9650 coulombs.

When same quantity of charge is passed , the products formed ast anode and cathode are ;

MgSO₄electrolysed ;at cathode H₂and at anode O₂ are formed in 2:1 ratio.

AgNO₃ electrolysed ; at cathode Ag and at anode O₂ are formed in 4:1 ratio.

MgCl₂ electrolysed ; at cathode H₂ and at anode Cl₂ are formed in 1:1 ratio.

KNO₃ electrolysed ; At cathode H₂ and at anode O₂ are formed in 2:1 ratio.

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