IIT/JEE Chemistry Practice #5: Oxidation Numbers

The video tutorial explores problems related to oxidation numbers, focusing on determining the oxidation number of phosphorus in BA H2PO22, sulfur in S8, S2F2, and H2S, and identifying compounds with an atom in the plus six oxidation state. The tutorial provides step-by-step calculations and explanations, emphasizing the importance of understanding charges and oxidation states in compounds.

What is the oxidation number of phosphorus in the compound Ba(H2PO2)2?

• +3

• +5

• +7

• +1

In which order are the oxidation numbers of sulfur in S8, S2F2, and H2S?

• -2, 0, +1

• 0, -2, +1

• +1, 0, -2

• 0, +1, -2

Which compound contains an atom in the +6 oxidation state?

• MnO4-

• Cr(CN)6^3-

• NiF6^2-

• CrO2Cl2

What is the oxidation state of manganese in the permanganate ion (MnO4-)?

• +5

• +4

• +7

• +6

In the compound Cr(CN)6^3-, what is the oxidation state of chromium?

• +4

• +6

• +2

• +3

What is the oxidation state of nickel in NiF6^2-?

• +2

• +6

• +3

• +4

In CrO2Cl2, what is the oxidation state of chromium?

• +4

• +5

• +6

• +7