Multiple Choice
Is the molecule H2O polar or nonpolar?
205
views
13. Liquids, Solids & Intermolecular Forces
Molecular Polarity
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What does it mean that water is polar?
A
Water molecules have an uneven distribution of electron density, resulting in a partial positive charge on one side and a partial negative charge on the other.
B
Water molecules have a net charge due to the loss of electrons.
C
Water molecules have an equal distribution of electron density, resulting in no net dipole moment.
D
Water molecules are nonpolar because they have a symmetrical shape.
Verified step by step guidance1
Understand the concept of polarity: Polarity in chemistry refers to the distribution of electrical charge over the atoms joined by the bond. A polar molecule has a net dipole moment due to the uneven distribution of electrons.
Examine the structure of a water molecule: Water (H₂O) consists of two hydrogen atoms covalently bonded to one oxygen atom. The oxygen atom is more electronegative than the hydrogen atoms, meaning it attracts the shared electrons more strongly.
Analyze the electron distribution: Due to the higher electronegativity of oxygen, the electrons in the O-H bonds are pulled closer to the oxygen atom, creating an uneven distribution of electron density.
Identify the partial charges: This uneven distribution results in a partial negative charge (δ-) near the oxygen atom and a partial positive charge (δ+) near the hydrogen atoms.
Conclude the polarity of water: The presence of these partial charges and the bent shape of the water molecule lead to a net dipole moment, making water a polar molecule.
Related Videos
Related Practice
Molecular Polarity practice set
Problem sets built by lead tutorsExpert video explanations