PH indicator | 101 Science Experiments |

For more such videos visit:

It is the best demonstration of pH indicator.

Definition of p indicator:
A pH indicator is a chemical compound added to a solution to know acidic /basic nature of the solution visually.
In this experiment, phenolphthalein is used as a pH indicator. It turns colourless in acidic solution and pink in basic solution.

Material required:
Apparatus: Conical flask, straw, beaker
Chemicals: sodium carbonate solution phenolphthalein indicator

Procedure and observations:
1. Take about 50 ml water in a beaker
2. Add approximately 2-3 drops of phenolphthalein indicator in this water
3. Observe the colour of the solution: It is colourless
4. Add 3-4 drops the sodium carbonate solution to the bottom of empty conical flask
5. Add water containing Phenolphthalein indicator to this glass. Observe the colour of the solution. It turns to pink. It is due to Sodium carbonate present in the flask
6. How will you make it colourless again? Just use the straw and blow air for some time in this pink solution. It will become colourless.

When phenolphthalein comes in contact with Sodium carbonate, it became pink as sodium carbonate is a base. When we blow air in this solution Carbon dioxide in the air reacts with water to form Carbonic acid. Addition of carbonic acid makes the solution neutral and then acidic in nature and indicator turns colourless again

Chemical reaction: Co2 (g) H20 (l) —–x H2CO3 (aq)


2 thoughts on “PH indicator | 101 Science Experiments |

Leave a Reply

Your email address will not be published.

Crazy science experiment at home with water | science experiment /#shorts

#shorts crazy experiment | science experiment | experiment with water. your question ❓ .crazy science experiment with water in hindi .water science experiments at home thanks for watching video 🙏📸 🤗 please subscribe my channel 👋 From samastipur Bihar (Indian) #jitendrarana source

Read More

4 Easy Science Experiments To Do At Home||Randomized Experiments

Hello and welcome back guys in our another youtube video and in todays video i am going to show you some amazing experiments with bottle at home _______________ Materials requiered are_ Bottles Acids diluted Aluminium foil Water Match Clay Savlon Glass bottle Scissors A plate Experiments with bottle Experiments att home Soda vinegar experiments Home […]

Read More

Water Vs ENO +Biscuits || Science Experiment || #Short #Experiment #Trending #Ytshort

Water Vs ENO +Biscuits || Science Experiment || #Short #Experiment #Trending #Ytshort tags battery experiment,battery experiment motor,battery experiments at home,battery experiment mr indian hacker,battery experiment video,battery experiment with coin,battery experiment easy,battery experiment 5 minute crafts,battery experiment light,battery experiment with water,battery experiment at home,battery blabanaeneriment,samar experiment battery kaisebanaen, water experiment,water experiments at home,water experiments 5 minute […]

Read More