Q. 154.4( 5 Votes )

What happens when an acid or a base is added to the water? Why does the beaker appear warm? Why should we always add acid or base to the water and not water to the acid or base?

Answer :

When an acid or base is added to water:

i. When we add acid to the water, acid gives H+ or H3O+ (hydronium ion) in water. For example: If we add HCl (an acid) to water, the reaction takes place is given as:



ii. When we add base to the water, base produces OH- (hydroxide ions) in water. For example: If we add NaOH to water, the reaction takes place is given as:



The beaker appears warm because the process of dissolving an acid or base in water is a highly exothermic one (releases energy)


We should always add acid or base to the water with constant stirring because if water is added to acid or base, the heat generated may cause the mixture to splash (a small blast) and cause harmful burns.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Acid: Types and NomenclatureQuiz | Acid: Types and NomenclatureQuiz | Acid: Types and Nomenclature50 mins
Know all About Crystallization of WaterKnow all About Crystallization of WaterKnow all About Crystallization of Water26 mins
Out-of-the-box Knowledge of Acids and BasesOut-of-the-box Knowledge of Acids and BasesOut-of-the-box Knowledge of Acids and Bases27 mins
Types of SaltsTypes of SaltsTypes of Salts36 mins
Genius Quiz | Know all About Experiments in ChemistryGenius Quiz | Know all About Experiments in ChemistryGenius Quiz | Know all About Experiments in Chemistry36 mins
Salts and Chemistry behind the SaltsSalts and Chemistry behind the SaltsSalts and Chemistry behind the Salts53 mins
Champ Quiz | Strength of Acids and BasesChamp Quiz | Strength of Acids and BasesChamp Quiz | Strength of Acids and Bases31 mins
Champ Quiz | All About Reactions of Acids and BasesChamp Quiz | All About Reactions of Acids and BasesChamp Quiz | All About Reactions of Acids and Bases38 mins
Genius Quiz | Salts Used in Daily LIfeGenius Quiz | Salts Used in Daily LIfeGenius Quiz | Salts Used in Daily LIfe40 mins
pHpHpH43 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses