Oxalate Ion and Ammonium Compounds

This video tutorial explains how to write the formula for ammonium oxalate. It begins by introducing the ammonium ion (NH4+) and the oxalate ion (C2O4 2-), detailing their charges and characteristics. The tutorial then demonstrates how to balance these charges to form the ionic compound ammonium oxalate, resulting in the formula (NH4)2C2O4.

What is the formula for the ammonium ion?

• NH4-

• NH2-

• NH4+

• NH3

Which of the following is a characteristic of the oxalate ion?

• It has a charge of 2-.

• It is not commonly found in chemistry.

• It is a monatomic ion.

• It has a positive charge.

Why do the charges in an ionic compound need to balance?

• To give the compound a metallic property.

• To make the compound soluble in water.

• To make the compound visible under a microscope.

• To ensure the compound is stable.

How many ammonium ions are needed to balance the charge of one oxalate ion?

• One

• Two

• Four

• Three

What is the correct formula for ammonium oxalate?

• NH4(C2O4)2

• NH42(C2O4)

• NH4C2O4

• NH42C2O4

Who is the presenter of the video?

• Dr. A

• Dr. D

• Dr. B

• Dr. C