But on a humid day, sweat has a harder time evaporating into the air. That’s where the hot, sticky feeling comes from. As a result, our bodies continue to sweat and sweat—but feel no relief. Ultimately, high humidity throws the body into overdrive to cool itself.

Heat from the Sun causes water to evaporate from the surface of lakes and oceans. This turns the liquid water into water vapor in the atmosphere. Plants, too, help water get into the atmosphere through a process called transpiration! Water can also get into the atmosphere from snow and ice.

Water vapor in the air can be extracted by condensation – cooling the air below its dew point, exposing the air to desiccants, or pressurizing the air. Unlike a dehumidifier, an AWG is designed to render the water potable.

The boilong point of hydrogen chloride is -85c, so it should evaporate quickly in room temperature. If you for example mix ethanol which has a boiling point of 78c with water the ethanol will evaporate off if you heat the solution to over 78c.

Evaporation causes the concentration of an unsaturated solution to increases / decreases / remains the same. As a saturated solution (with no solids) is diluted, its concentration increases / decreases / remains the same.

pH levels can fluctuate daily due to photosynthesis and respiration in the water. The degree of change depends on the alkalinity of the water. Carbon dioxide is the most common cause of acidity in water ¹⁵.

The pH value of a solution is directly dependent on the temperature. A pH value without a temperature value is incoherent. pH values taken at the same temperature or converted using solution temperature compensation can be compared to each other.

Obtaining a pH level requires an aqueous solution because pH is the result of the comparative amount of free hydrogen and hydroxyl ions in a water-based solution. Adding baking soda with its pH of 9 to water with a neutral pH of 7 raises the pH level of water.