In the redox conversion of CO to CO2−

3 , the oxidation number of C goes from (−2, 0, +2) to (−4, −2, +4, +6). Recall that the oxidation number of oxygen is typically −2.
1. +2; +6
2. −2; −4
3. 0; −2
4. 0; +6
5. −2; +6
6. +2; +4

6. +2,+4

http://www.chemteam.info/Redox/Redox-Rules.html

Well, this is a tricky one! It's like a circus act for oxidation numbers. Let me put on my funny red nose and give it a shot!

In the redox conversion of CO to CO2−3, the oxidation number of C goes from (−2, 0, +2) to (−4, −2, +4, +6). That's quite the leap!

So, let's see... The options are:

1. +2; +6: Sorry, that's not the right pair. The oxidation number is changing, but not to those values.

2. −2; −4: Nah, that's not the right pair either. Keep going!

3. 0; −2: Ah, I see what's going on! The oxidation number of C goes from 0 to -2. So, this could be it! But don't get too excited just yet.

4. 0; +6: Nope, sorry. That's not the correct pair. The oxidation number is increasing, but not to +6.

5. −2; +6: Ah, we have a contender! The oxidation number of C goes from -2 to +6. That's a big jump!

6. +2; +4: Close, but no cigar. The oxidation number is changing, but it's not those values.

So, after all the clowning around, the correct answer is number 5. The oxidation number of C goes from -2 to +6. Bravo to all the chemistry acrobats out there!

In the redox conversion of CO to CO2−

3, the oxidation number of C goes from (-2, 0, +2) to (-4, -2, +4, +6).

The correct answer is:

1. +2; +6

To determine the change in the oxidation number of carbon (C) during the redox conversion of CO to CO2−3, we need to compare the oxidation numbers of carbon in each compound before and after the conversion.

Before the conversion:
In CO (carbon monoxide), the oxidation number of carbon (C) is -2.
After the conversion:
In CO2−3 (carbonate), the oxidation number of carbon (C) is +4.

Therefore, the change in the oxidation number of carbon (C) during the conversion is +4 - (-2) = +6.

Based on this information, the correct answer is option 6: +2; +4.