Oceans - Hydrogen bonding and water
3 important questions on Oceans - Hydrogen bonding and water
What are the properties of hydrogen bonding?
- High heat capacity
- High surface tension
-Less dense when solidifies = it expands when it solidifies. The hydrogen bonds cause the molecules to push apart. Therefore there are not as many molecules present in ice.
Explain why water's boiling point is much higher than that of ammonia.
They are both held together by hydrogen bonding but water is capable of forming two hydrogen bonds whereas ammonia can only form one. Therefore, more energy is needed to separate the water molecules.
Why is water preferred over ammonia?
Ammonia =
- less efficient
- lower specific heat capacity
- carries less energy per mole/ gram
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