Oxidation Numbers and Nickel Compounds

This video tutorial explains how to determine the oxidation number of nickel in nickel(II) hydroxide (Ni(OH)2). It begins by noting that Ni(OH)2 is a neutral compound, meaning the sum of oxidation numbers is zero. The video assigns oxidation numbers to oxygen (-2) and hydrogen (+1), and sets up an equation to solve for nickel's oxidation number, which is found to be +2. The tutorial concludes by verifying that the sum of oxidation numbers equals zero, confirming the compound's neutrality.

What is the charge of nickel(II) hydroxide as a compound?

• Negative

• Neutral

• Positive

• Variable

What is the typical oxidation number for oxygen in compounds?

• +2

• 0

• +1

• -2

When hydrogen is bonded to a non-metal, what is its oxidation number?

• 0

• +1

• -1

• +2

What equation is set up to find the oxidation number of nickel in Ni(OH)2?

• x - 2 = 0

• x + 2 = 0

• x - 4 + 2 = 0

• x + 4 - 2 = 0

What is the oxidation number of nickel in Ni(OH)2?

• +2

• -2

• 0

• +1

Why do the oxidation numbers in Ni(OH)2 add up to zero?

• Because it is a charged compound

• Because it is a neutral compound

• Because nickel has a variable oxidation state

• Because hydrogen has a negative oxidation number

Who is the presenter of the video?

• Dr. A

• Dr. B

• Dr. C

• Dr. D