Which of the following is NOT a property of water that limits its usefulness as a coolant?

Chlorine content in the water typically does not affect its physical properties in terms of its ability to function as a coolant. The primary characteristics that determine the effectiveness of a coolant include its boiling point, viscosity, and specific heat.

The boiling point of water signifies the temperature at which it transitions to vapor; it plays a crucial role in how effective water can be in carrying heat away in cooling systems. Viscosity refers to how thick or resistant to flow a liquid is, influencing how easily it can move through pipes and machinery. Meanwhile, specific heat indicates the amount of heat energy required to change the temperature of a substance. Water has a high specific heat, which allows it to absorb a significant amount of heat without a large increase in temperature, making it a very effective coolant in various applications.

In contrast, while chlorine can be relevant for sanitation or chemical reactions, it does not inherently limit water's physical capabilities as a coolant. Therefore, chlorine content is not considered a critical property regarding water's effectiveness in cooling systems.