What type of process is dilution of acid with water?
Answer and explanation
Correct answer: Exothermic
The governing concept is heat change during a process. When concentrated acid is diluted with water, hydration and mixing release heat to the surroundings, so the process is exothermic; option A is correct. An endothermic process absorbs heat, which is the opposite description. “Neutral” describes acid-base character rather than heat transfer, and slow evaporation is a physical change unrelated to acid dilution.
Frequently asked questions
What is the correct answer to this question?
Exothermic
Why is this the correct answer?
The governing concept is heat change during a process. When concentrated acid is diluted with water, hydration and mixing release heat to the surroundings, so the process is exothermic; option A is correct. An endothermic process absorbs heat, which is the opposite description. “Neutral” describes acid-base character rather than heat transfer, and slow evaporation is a physical change unrelated to acid dilution.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
