Understanding Sodium Bicarbonate Properties

This video tutorial explains how to write the Lewis structure for sodium bicarbonate (NaHCO3). It begins by identifying sodium as a metal and HCO3 as a polyatomic ion, highlighting their respective charges. The tutorial then demonstrates how to construct the Lewis structure, showing the ionic bond between the sodium ion and the bicarbonate ion. The video concludes by explaining the electron transfer that results in the ionic bond and the overall neutrality of the compound.

What type of compound is sodium bicarbonate (NaHCO3)?

• Ionic compound

• Molecular compound

• Covalent compound

• Metallic compound

In which group of the periodic table is sodium located?

• Group 2

• Group 1

• Group 4

• Group 3

What is the charge of the bicarbonate ion (HCO3)?

• 2+

• 1-

• 1+

• 2-

What is the charge of the sodium ion in NaHCO3?

• 2-

• 1+

• 1-

• 2+

What type of bond is formed between the nonmetals in HCO3?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

What is the overall charge of the sodium bicarbonate molecule?

• Negative

• Positive

• Variable

• Neutral

Why do we put brackets around the HCO3 in the Lewis structure?

• To show it is a metal

• To denote it is a single atom

• To highlight its positive charge

• To indicate it is a polyatomic ion

What happens to the sodium atom when it forms an ionic bond with HCO3?

• It shares an electron

• It remains unchanged

• It gains an electron

• It loses an electron

What is the nature of the structure formed by NaHCO3 units?

• Liquid

• Crystalline

• Amorphous

• Gaseous

What is the role of the extra electron in the HCO3 ion?

• It makes the ion neutral

• It makes the ion positive

• It has no effect

• It makes the ion negative