Question

(45 pts) In which reaction is carbon reduced?

Answer 1

Answer:

Reductio is gain of electrons, while oxdation is loss. The oxidtion states of carbon in the reaction will show either of oxidation or reduction occurrence.

$C_{2} H_{2}(g) +H_{2} (g)$ → $C_{2} H_{4}(g)$

Explanation:

Electrons displacement is explained for each reaction below:

1. +2 to +4 = loss of 2 more lectrons-------oxidation
2. +4 throughout reaction----no exchange of electrons
3. -4 to +4 =  loss of 4 electrons-----oxidation
4. 0 to -2 = gain of 2 electrons-----reduction