Explanation:
To determine the number of hydroxide (OH⁻) ions in 2 moles of aluminum hydroxide (Al(OH)₃), we can follow these steps:
Identify the chemical formula of aluminum hydroxide, which is Al(OH)₃. This indicates that there are three hydroxide ions for every one molecule of aluminum hydroxide.
Calculate the total number of hydroxide ions in 2 moles of Al(OH)₃ by multiplying the number of moles by the number of hydroxide ions per molecule.
Here’s the calculation:
Number of OH⁻ ions per molecule of Al(OH)₃=3
Total number of OH⁻ ions in 2 moles of Al(OH)₃=2 moles×3 ions/mole
Total number of OH⁻ ions=6 moles
So, there are 6 moles of hydroxide ions in 2 moles of Al(OH)₃.