Manganese and Sulfate Compounds

This video tutorial explains how to write the chemical formula for manganese(III) sulfate. It begins by identifying the element symbols and charges for manganese and the sulfate ion. The tutorial then demonstrates the crisscross method to balance the charges and derive the correct formula, Mn2(SO4)3. The video concludes with a verification of the formula to ensure the net charge is zero.

What is the element symbol for manganese?

• Mg

• Mo

• Mn

• Ma

What does the suffix 'ate' in sulfate indicate?

• It is a noble gas

• It is a polyatomic ion

• It is a transition metal

• It is a metal

What is the ionic charge of the sulfate ion?

• 1-

• 2-

• 3-

• 4-

How can you find the sulfate ion if you don't memorize it?

• By guessing

• By looking it up on the periodic table

• By asking a friend

• By checking a list of polyatomic ions

What does the Roman numeral III in manganese III indicate?

• The atomic number

• The number of neutrons

• The ionic charge of 3+

• The number of electrons

Why must the charges in a compound add up to zero?

• To make it a liquid

• To make it a metal

• To ensure it is a neutral compound

• To make it a gas

What is the purpose of the crisscross method?

• To find the atomic mass

• To balance the charges in a compound

• To determine the melting point

• To calculate the density

What is the correct formula for manganese III sulfate?

• Mn(SO4)2

• Mn3(SO4)2

• Mn2(SO4)3

• MnSO4