First, dissociate the salt into ions:
Fe(NO3)2(aq) → Fe2+(aq) + 2 NO3–(aq)
Check the cation for hydrolysis:
Fe2+(aq) + 2 H2O(l) → ← FeOH+(aq) + H3O+(aq)
Yes, the reaction occurs because FeOH+ is a weak base.
So hydronium ion is generated.
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