Difficulty: Medium

Average Score: 56%

Which of the following is a benefit of the intermolecular hydrogen bonding of water? (Select one that doesn't apply.)

Rationale

Water moves from higher to lower concentrations.

This statement describes a general property of solutes in solutions rather than a specific benefit derived from hydrogen bonding in water. While water does facilitate the movement of substances, this process is a result of concentration gradients and diffusion, not directly due to the hydrogen bonding characteristic of water molecules.

A (Water has a relatively high specific heat value.) YOUR ANSWER

The high specific heat of water is a direct consequence of hydrogen bonds, which require substantial energy to break. This property allows water to absorb and retain heat, enabling it to regulate temperatures in the environment and within organisms, making it essential for life.

B (Water has strong cohesive and adhesive properties.) YOUR ANSWER

The cohesive properties of water, stemming from hydrogen bonding, enable water molecules to stick to each other, resulting in surface tension. Additionally, its adhesive properties allow water to interact with other substances, contributing to phenomena like capillary action. Both characteristics are vital for processes such as water transport in plants.

C (Polarity of water allows it to act as a versatile solvent.) YOUR ANSWER

The polarity of water molecules, which is a result of hydrogen bonding, allows water to dissolve a wide range of substances. This solvent capability is crucial for biological processes, as it facilitates chemical reactions and nutrient transport in living organisms.

Conclusion

Hydrogen bonding in water confers several significant benefits, including high specific heat capacity, strong cohesive and adhesive properties, and polarity that enhances its solvent abilities. However, the movement of water from higher to lower concentrations is not a benefit of hydrogen bonding; rather, it is a basic principle of diffusion. Understanding these properties is essential for grasping water's critical role in biological systems and environmental processes.

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