The colorless aqueous solution formed by the cation in question is water.
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Potassium thiocyanate typically appears as colorless or white crystals.
Yes, NaNO3 (sodium nitrate) is soluble in water and forms an aqueous solution when dissolved.
In an aqueous solution of NiCl₂, the ions present are Ni²⁺ (nickel cation) and Cl⁻ (chloride anion).
Hydrolysis occurs when water breaks apart a salt into its constituent ions, leading to an acidic, basic, or neutral solution. If the cation is a weak acid or the anion is a weak base, the solution will be acidic or basic, respectively. If both the cation and anion are strong acids or bases, the solution will be neutral.
The general name for aqueous compounds where hydrogen is a cation is acids. Acids are substances that release hydrogen ions (H+) when dissolved in water.