Answer :

Litmus paper acts as an indicator to distinguish between acid and base. Blue litmus paper turns red in acidic medium and red litmus paper turns blue in basic medium.

i)


ii) The following acids and alkalies react to give the corresponding salts.



Acids and alkalies react to give salt and water.


When a strong acid and a strong base react they give a neutral salt. Example: KCl


When a strong acid and a weak base react they give an acidic salt. Example: (NH4)2SO4


When a weak acid and a strong base react they give a basic salt. Example: Na2CO3


iii) Litmus paper shows different colours in acidic and basic medium.


When a strong acid and a strong alkali react, they give a neutral salt. Thus the litmus paper does not change its colour. Blue litmus paper remains blue and red litmus paper remains red. Example: KCl


When a strong acid and a weak alkali react, they give an acidic salt. Thus blue litmus paper turns red and red litmus paper remains red. Example: (NH4)2SO4


When a weak acid and a strong alkali react, they give a basic salt. Thus red litmus paper turns blue and blue litmus paper remains blue. Example: Na2CO3


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Learn to Make Your Own Acid Rain and pH Paper at Home!Learn to Make Your Own Acid Rain and pH Paper at Home!Learn to Make Your Own Acid Rain and pH Paper at Home!30 mins
Elections- Mechanism and TypesElections- Mechanism and TypesElections- Mechanism and Types48 mins
Constitution - Formation and ObjectiveConstitution - Formation and ObjectiveConstitution - Formation and Objective63 mins
Kinetic and Potential EnergyKinetic and Potential EnergyKinetic and Potential Energy39 mins
Construction-2Construction-2Construction-244 mins
PYQ's Practice -ConstructionPYQ's Practice -ConstructionPYQ's Practice -Construction47 mins
Conservation of EnergyConservation of EnergyConservation of Energy41 mins
Parallel Lines and Transversal LinesParallel Lines and Transversal LinesParallel Lines and Transversal Lines22 mins
Construction-1Construction-1Construction-145 mins
Work and Types of Work doneWork and Types of Work doneWork and Types of Work done40 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
RELATED QUESTIONS :

Solutions of sodiKerala Board Chemistry Part II

Organic acids areKerala Board Chemistry Part II