Why Are Aqueous Solutions of Highly Charged Metal Ions, Such

question 85

Multiple Choice

Why are aqueous solutions of highly charged metal ions, such as , usually acidic?

• A) The highly charged ion strips hydrogen ions away from water as if forms and releases them into the solution causing the solution to become acidic.
• B) As the water molecule binds to the aluminum ion, the H-O bond becomes more polar. This means that the water molecule is more readily able to form hydrogen ions, which makes the solution acidic.
• C) False! ions tend to make aqueous solutions basic since they pull the OH^⁻ ion from the water molecule.
• D) The formation of the oxide releases hydrogen ions to the aqueous solution making it acidic.