Answer: Both O atoms in H2O2 form hydrogen bonds (more H-bond donors and acceptors per molecule).
- A Both O atoms in H2O2 form hydrogen bonds (more H-bond donors and acceptors per molecule)
- B H2O2 carries a significant degree of ionic character unlike water as widely reported
- C H2O2 molecules are generally much larger in physical size than water in standard practice
- D H2O2 lacks hydrogen bonding largely, relying mainly on dispersion forces under most conditions encountered
Correct answer: A. Both O atoms in H2O2 form hydrogen bonds (more H-bond donors and acceptors per molecule)
Explanation: H2O2 has two O-H bonds and two oxygen lone pairs, enabling more extensive hydrogen bonding than water (one O, two O-H).
Each water molecule's O-H bonds (covalent, solid) can hydrogen-bond (dashed) to neighbouring molecules, forming an extended network responsible for water's unusually high boiling point and density anomaly.
Concept context
The simplest and most abundant element in the universe. Study its unique position in the periodic table, isotopes (protium, deuterium, tritium), properties of water and hydrogen peroxide, and industrial uses.