What type of process is mixing acid with water?
Answer and explanation
Correct answer: Exothermic
Mixing an acid with water, especially when diluting a concentrated acid, releases heat because hydration of the ions is exothermic. A process that gives out heat to its surroundings is called an exothermic process, so option A is correct. Endothermic processes absorb heat, photolytic processes involve decomposition by light, and precipitation produces an insoluble solid; none of these describes ordinary acid dilution.
Frequently asked questions
What is the correct answer to this question?
Exothermic
Why is this the correct answer?
Mixing an acid with water, especially when diluting a concentrated acid, releases heat because hydration of the ions is exothermic. A process that gives out heat to its surroundings is called an exothermic process, so option A is correct. Endothermic processes absorb heat, photolytic processes involve decomposition by light, and precipitation produces an insoluble solid; none of these describes ordinary 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.
