Chromium 3 Sulfate Concepts

The video tutorial explains how to write the formula for chromium(III) sulfate. It begins by identifying the element symbol for chromium and its charge as a transition metal. The tutorial then discusses the sulfate ion, emphasizing the importance of memorizing its formula. The crisscross method is introduced to balance the charges between chromium and sulfate, resulting in a neutral compound. Finally, the video verifies the derived formula, ensuring the net charge is zero.

What is the element symbol for chromium in the formula for Chromium 3 Sulfate?

• C

• Cr

• Ch

• Cm

What charge does the chromium ion have in Chromium 3 Sulfate?

• 2+

• 3+

• 4+

• 1+

What is the charge of the sulfate ion?

• 2-

• 1-

• 4-

• 3-

Why is it recommended to memorize the sulfate ion?

• It's not important in chemistry.

• It's only used in advanced chemistry.

• It's commonly encountered in chemistry.

• It's rarely used in chemistry.

What must the total charge of a neutral compound be?

• Negative

• Positive

• Zero

• Variable

What method is used to balance the charges in Chromium 3 Sulfate?

• Cross-multiply

• Substitution

• Crisscross

• Elimination

What is the correct formula for Chromium 3 Sulfate?

• Cr(SO4)2

• CrSO4

• Cr2(SO4)3

• Cr3(SO4)2

How do you verify the correctness of the formula for Chromium 3 Sulfate?

• By checking the color of the compound

• By measuring the mass

• By ensuring the charges add up to zero

• By checking the solubility

What is the net charge of the correct formula for Chromium 3 Sulfate?

• 1+

• 0

• 2-

• 3+