What is the effect of hydrogen bonding on the boiling point of water?
Practice Questions
1 question
Q1
What is the effect of hydrogen bonding on the boiling point of water?
Increases boiling point
Decreases boiling point
No effect
Varies with pressure
Hydrogen bonding significantly increases the boiling point of water compared to other similar-sized molecules.
Questions & Step-by-step Solutions
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Q
Q: What is the effect of hydrogen bonding on the boiling point of water?
Solution: Hydrogen bonding significantly increases the boiling point of water compared to other similar-sized molecules.
Steps: 6
Step 1: Understand what hydrogen bonding is. Hydrogen bonding occurs when a hydrogen atom is attracted to a highly electronegative atom, like oxygen.
Step 2: Recognize that water (H2O) has a bent shape, with one oxygen atom and two hydrogen atoms. The oxygen atom is more electronegative than hydrogen, creating a polar molecule.
Step 3: Realize that the polarity of water allows it to form hydrogen bonds with other water molecules. Each water molecule can form up to four hydrogen bonds.
Step 4: Know that hydrogen bonds are strong compared to other types of intermolecular forces, like van der Waals forces.
Step 5: Understand that the presence of these strong hydrogen bonds requires more energy (in the form of heat) to break them when water is heated.
Step 6: Conclude that because more energy is needed to break the hydrogen bonds, the boiling point of water is higher than that of other similar-sized molecules that do not form hydrogen bonds.