Iron(III) Hydroxide Charge Balancing

The video tutorial explains how to write the chemical formula for Iron(III) Hydroxide. It begins by identifying the element symbols for iron and hydroxide, emphasizing the need to memorize the hydroxide ion. The tutorial discusses the ionic charges of iron and hydroxide, using Roman numerals to indicate the charge of iron. The crisscross method is introduced to balance the charges, ensuring a neutral compound. The tutorial concludes by verifying the formula and confirming its correctness.

What is the element symbol for iron as found on the periodic table?

• I

• Ir

• Fe

• In

What is the charge of the hydroxide ion?

• 2+

• 1-

• 3+

• 0

Why is it necessary to balance the charges when writing the formula for Iron(III) Hydroxide?

• To achieve a net charge of zero

• To make the compound colorful

• To increase the compound's weight

• To ensure the compound is stable

What method is used to balance the charges in Iron(III) Hydroxide?

• Cross-multiplication method

• Crisscross method

• Substitution method

• Addition method

Why do we use parentheses around the hydroxide ion in the formula?

• Because it is a single atom

• To make it look neat

• Because it is a polyatomic ion

• To separate it from the metal

How many hydroxide ions are needed to balance the charge of one iron ion in Iron(III) Hydroxide?

• Three

• Two

• Four

• One

What is the final formula for Iron(III) Hydroxide?

• FeOH

• Fe(OH)2

• Fe(OH)3

• FeO3H

What is the net charge of the correctly balanced Iron(III) Hydroxide formula?

• 3+

• 1+

• 0

• 1-