Which process increases the temperature of the water when quick lime is added?

Which process increases the temperature of the water when quick lime is added?

• A. Hydration
• B. Evaporation
• C. Condensation
• D. Filtration

Answer: (A)

The process that increases the temperature of the water when quick lime is added is hydration. When quick lime, or calcium oxide, is introduced to water, it undergoes an exothermic reaction. This means that the reaction releases heat, resulting in an increase in the temperature of the water. During the hydration of quick lime, it reacts with water to form calcium hydroxide (slaked lime), and as this reaction takes place, the energy released causes the surrounding water temperature to rise. This principle is often applied in various water treatment and industrial processes, where quick lime is used not only to adjust pH but also to enhance thermal conditions within the system. Other processes, such as evaporation and condensation, involve heat transfer but do not result in a temperature increase due to a chemical reaction with water. Filtration simply separates particles from liquids based on physical properties and does not interact chemically with the water or affect its temperature in the manner described.

The process that increases the temperature of the water when quick lime is added is hydration. When quick lime, or calcium oxide, is introduced to water, it undergoes an exothermic reaction. This means that the reaction releases heat, resulting in an increase in the temperature of the water.

During the hydration of quick lime, it reacts with water to form calcium hydroxide (slaked lime), and as this reaction takes place, the energy released causes the surrounding water temperature to rise. This principle is often applied in various water treatment and industrial processes, where quick lime is used not only to adjust pH but also to enhance thermal conditions within the system.

Other processes, such as evaporation and condensation, involve heat transfer but do not result in a temperature increase due to a chemical reaction with water. Filtration simply separates particles from liquids based on physical properties and does not interact chemically with the water or affect its temperature in the manner described.