Can someone please help me,
A sample of solid chromium(III) hydroxide displays amphoteric character when treated separately with dilute hydrochloric acid and with dilute aqueous sodium hydroxide.Write an ionic equation for each of these reactions. Include the formula of each complex ion formed. Describe the changes that you would observe in each reaction.
Where chromium(III) hydroxide = Cr(OH)3
Im stuck
For HCl I thought it was: Cr(OH)3 + 3H+ --> Cr^3+ + 3H2O which is wrong
For NaOH I thought it was Cr(OH)3 + OH- --> Cr(OH)4-