Final answer:
Among the given options, (B) CH3Cl, which is Methyl chloride, is NOT a trihalomethane since it has only one halogen atom rather than the three halogen atoms required to be classified as a trihalomethane.
Step-by-step explanation:
The question asks which of the following compounds is NOT a trihalomethane. Trihalomethanes are chemical compounds that have three halogen atoms attached to a methane molecule. By assessing the molecular compositions of the given options, we can identify that:
- (A) CHCl3 (Chloroform) has three halogen atoms (chlorine) attached to a methane molecule, making it a trihalomethane.
- (B) CH3Cl (Methyl chloride) has only one halogen atom (chlorine) attached to a methane molecule, so it is not a trihalomethane.
- (C) CHF3 (Fluoroform) contains three halogen atoms (fluorine) attached to a methane molecule, qualifying it as a trihalomethane.
- (D) CHBr2Cl has three halogen atoms (two bromine and one chlorine) attached to a methane structure, which makes it a trihalomethane as well.