Statement-II ⇒ At cathode, instead of Mg,H2O(ℓ) will reduce & evolve H2 gas.
Given below are two statements :
1 M aqueous solution of each of Cu(NO3)2,AgNO3, Hg2(NO3)2;Mg(NO3)2 are electrolysed using inert electrodes,
Given : EAg+/Agθ=0.80 V,EHg22+/Hgθ=0.79 V,ECu2+/Cuθ=0.24 V and EMg2+/Mgθ=−2.37 V
Statement (I) : With increasing voltage, the sequence of deposition of metals on the cathode will be Ag,Hg and Cu
Statement (II) : Magnesium will not be deposited at cathode instead oxygen gas will be evolved at the cathode.
In the light of the above statement, choose the most appropriate answer from the options given below
Held on 7 Apr 2025 · Verified 6 Jul 2026.
Both statement I and statement II are incorrect
Statement I is correct but statement II is incorrect
Both statement I and statement II are correct
Statement I is incorrect but statement II is correct
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