Nitrite Ion and Nitrous Acid Concepts

The video tutorial explains how to write the chemical formula for nitrous acid (HNO2). It begins by identifying the type of acid based on its name, noting the absence of 'hydro' and the presence of 'ous'. The tutorial then guides viewers through replacing 'ous' with 'ite' to form the nitrite ion, which is NO2-. Using the common ion table, the nitrite ion is confirmed, and the formula is completed by adding hydrogen (H) in front, resulting in HNO2. The video concludes with a summary and thanks from Dr. B.

What does the absence of 'hydro' in the name 'nitrous acid' indicate about the type of acid?

• It is a binary acid.

• It is an oxyacid.

• It contains a metal.

• It is a base.

When the suffix 'ous' is present in an acid's name, what should it be replaced with to find the corresponding ion?

• ic

• ite

• ide

• ate

What is the chemical formula for the nitrite ion?

• N2O

• NH4+

• NO2-

• NO3-

Which table is recommended to confirm the formula of common ions like nitrite?

• Common Ion Table

• Periodic Table

• Activity Series

• Solubility Table

What element is added to the nitrite ion to form the complete formula for nitrous acid?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon

What is the final chemical formula for nitrous acid?

• HNO3

• HNO2

• H2NO2

• H2O