Question

what would be the chemical formula for the compound aluminum sulfate? al^{3+} so_{4}^{2-} \to

Explanation:

Step1: Determine the charges

The charge of \(Al^{3+}\) is \(+3\), and the charge of \(SO_{4}^{2 -}\) is \(- 2\).

Step2: Use the criss - cross method

To balance the charges, we take the absolute value of the charge of one ion as the subscript of the other ion. So for \(Al^{3+}\) and \(SO_{4}^{2 -}\), we get \(Al_{2}(SO_{4})_{3}\).

Answer:

\(Al_{2}(SO_{4})_{3}\)