Ionic Compounds and Barium Chemistry

The video tutorial explains how to write the chemical formula for barium bicarbonate, also known as barium hydrogen carbonate. It begins by identifying the element symbol for barium and the bicarbonate ion, which is not found on the periodic table but can be memorized or looked up. The bicarbonate ion has a 1- charge, while barium has a 2+ charge. The tutorial demonstrates how to balance these charges to achieve a net charge of zero, resulting in the formula for barium bicarbonate. The process involves using parentheses and subscripts to indicate the correct number of ions needed for charge balance.

What is the element symbol for barium?

• B

• Be

• Br

• Ba

Which of the following is a polyatomic ion that is not found on the periodic table?

• Hydroxide

• Bicarbonate

• Sulfate

• Nitrate

What is the ionic charge of barium?

• 1+

• 2+

• 2-

• 1-

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

• To make the compound dissolve in water

• To ensure the compound is stable

• To make the compound colorful

• To increase the compound's weight

How many bicarbonate ions are needed to balance the charge of one barium ion?

• Two

• Four

• One

• Three

What is the final chemical formula for barium bicarbonate?

• BaHCO3

• Ba(HCO3)2

• BaCO3

• Ba2(HCO3)3