Question

23 multiple choice 1 point
in the image shown above, which letter represents the attractive forces broken when the substance reaches its boiling temperature?
all: a, b, and c
a
c
b

Explanation:

Step1: Identify the types of forces

In a substance, when it reaches boiling temperature, the intermolecular forces (forces between molecules) are broken. Intramolecular forces (forces within a molecule like covalent bonds) are not broken during boiling.

• Letter A represents a covalent bond (intramolecular force within the \(PH_3\) molecule).
• Letter B represents a dipole - dipole force (intermolecular force between \(PH_3\) molecules).
• Letter C represents a covalent bond (intramolecular force within the \(PH_3\) molecule).

Step2: Determine the force broken at boiling

Since boiling breaks intermolecular forces, and only letter B represents an intermolecular (dipole - dipole) force.

Answer:

D. B