Select all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom.
(CH3)2CO acetone
CO carbon monoxide
S8 octasulfur
CHClCHCl cis-1,2-dichloroethene
CF3CF3 hexafluoroethane
CH3COCH3CH2 methylethylketone
This question plus the one following has only one material there. Perhaps you didn't finish the question?
To determine which substances have a hydrogen atom that can participate in hydrogen bonding with an appropriate acceptor atom, we need to identify which molecules have a hydrogen atom bonded to an electronegative atom (typically nitrogen, oxygen, or fluorine). Hydrogen bonding occurs when the hydrogen atom is attracted to the electron-rich region of an acceptor atom.
Let's analyze each substance from the given list:
1. (CH3)2CO (acetone): Acetone contains a hydrogen atom bonded to a carbon atom. Carbon is not electronegative enough to participate in hydrogen bonding. Hence, (CH3)2CO does not have a hydrogen atom that can participate in hydrogen bonding.
2. CO (carbon monoxide): Carbon monoxide does not have a hydrogen atom, so it cannot participate in hydrogen bonding.
3. S8 (octasulfur): Sulfur is not electronegative enough to participate in hydrogen bonding. Hence, S8 does not have a hydrogen atom that can participate in hydrogen bonding.
4. CHClCHCl (cis-1,2-dichloroethene): Although chlorine is electronegative, the hydrogen atoms in CHClCHCl are not bonded to an electronegative atom. Therefore, CHClCHCl does not have a hydrogen atom that can participate in hydrogen bonding.
5. CF3CF3 (hexafluoroethane): Fluorine is highly electronegative, and the hydrogen atoms in CF3CF3 are bonded to carbon atoms. Carbon is not electronegative enough to participate in hydrogen bonding. Therefore, CF3CF3 does not have a hydrogen atom that can participate in hydrogen bonding.
6. CH3COCH3CH2 (methylethylketone): Methylethylketone has a hydrogen atom bonded to an oxygen atom. Oxygen is electronegative and can participate in hydrogen bonding. Hence, CH3COCH3CH2 has a hydrogen atom that can participate in hydrogen bonding.
Therefore, the substance from the given list with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom is CH3COCH3CH2 (methylethylketone).