Sodium Hydroxide Properties and Ions

The video tutorial explains how to determine the number of ions in sodium hydroxide (NaOH). It begins by identifying NaOH as an ionic compound composed of sodium, a metal, and hydroxide, a group of non-metals. The tutorial details the ionic charges: sodium has a +1 charge, and hydroxide has a -1 charge. These charges balance each other, making the compound neutral. The video concludes by identifying the ions present in NaOH: sodium ion (Na+) and hydroxide ion (OH-), resulting in two ions per formula unit.

What type of compound is sodium hydroxide (NaOH)?

• Ionic compound

• Covalent compound

• Metallic compound

• Molecular compound

What is the ionic charge of sodium in NaOH?

• 2-

• 2+

• 1+

• 1-

What is the charge of the hydroxide ion (OH) in NaOH?

• 2-

• 1-

• 1+

• 2+

Why is the formula unit of NaOH neutral?

• Because it has more positive ions

• Because it has more negative ions

• Because the charges of ions balance each other out

• Because it is a covalent compound

How many ions are present in each formula unit of NaOH?

• Three

• Four

• Two

• One