1. In terms of chemical reactions:
* Reduced Compound: A compound that has gained electrons in a chemical reaction. This process is called reduction. The compound's oxidation state (a number representing the number of electrons gained or lost) becomes more negative during reduction.
* Example: In the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O), the hydrogen gas is oxidized (loses electrons) and the oxygen gas is reduced (gains electrons). Water is considered a reduced compound compared to oxygen gas.
2. In organic chemistry:
* Reduced Compound: A compound with a higher proportion of hydrogen atoms and a lower proportion of oxygen atoms, halogens, or other electronegative elements.
* Example: An alkane (e.g., methane, CH4) is considered a more reduced compound than an alcohol (e.g., methanol, CH3OH).
Key Points:
* Reduction involves the gain of electrons.
* Reduced compounds are often more stable and less reactive than their oxidized counterparts.
* In organic chemistry, reduced compounds typically have a higher number of C-H bonds.
It's important to clarify the context when discussing a "reduced compound" to ensure the meaning is understood correctly.
