11 - Luu (sl24673) H11: Redox Reactions Mccord (52445) 1...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Luu (sl24673) H11: Redox Reactions Mccord (52445) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points If the oxidation state of H is +1 and O is- 2, what is the oxidation state of C in C 2 H 4 O? 1.- 1 correct 2. +2 3.- 2 4. +1 5.- 1 2 Explanation: To calculate oxidation numbers, remember that the the sum of the numbers must equal the total charge on the molecule or in the case of neutral species, zero. Let x be the oxidation number of C. 2 x + 4(+1) + (- 2) = 0 C 2 H 4 O : 2 x + 2 = 0 2 x =- 2 x =- 1 002 10.0 points What is the oxidation number of carbon in carbonate? 1.- 3 2.- 1 3. +3 4.- 4 5. +1 6.- 2 7. +4 correct 8. 9. +2 Explanation: The carbonate ion is CO 2- 3 . The oxidation number of O is usually- 2, so for three O atoms, we obtain- 6. The overall oxidation number must equal the charge on the ion, so C must have an oxidation number of +4. C- 2 O 3 2- C- 2 O 3- 6 2- C +4- 2 O 3- 6 2- +4 C +4- 2 O 3- 6 2- 003 10.0 points What is the oxidation number of the noble gas in XeO 3 ? 1. 2 2. 6 correct 3.- 4 4.- 6 Explanation: The oxidation number of halogens is -1 (if no other halogens are present). The oxidation number of O is -2 (if no F is present). The sum of all oxidation numbers must equal the sum of the overall charge of the species. For XeO 3 , 0 = x + 3 (- 2) +6 = x 004 (part 1 of 2) 10.0 points What is the oxidation number (state) of I in the compound HIO 4 ? Remember that the oxidation state is associated with a sign; e.g. , +1....
View Full Document

This note was uploaded on 12/17/2010 for the course CH 52445 taught by Professor Mccord during the Fall '10 term at University of Texas at Austin.

Page1 / 4

11 - Luu (sl24673) H11: Redox Reactions Mccord (52445) 1...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online