chem project.pdfclass 12 chem project go

It will definitely help you for your chemistry project for class 12 students thanks!

1. RateofEvaporationofLiquids
Class12ChemistryProject
Submittedby:[YourName]
School:JawaharNavodaya
Vidyalaya,Gandhinagar
Submittedto:[Teacher’sName]

2. Aim
●Tostudyandcomparetherateof
evaporationofdifferentliquidsunder
similarconditions.

3. Introduction
●Evaporationistheprocessbywhich
moleculesinaliquidstategainenough
energytoenterthegaseousstate.
●Itoccursatalltemperaturesandincreases
withsurfacearea,temperature,andairflow.
●Thisprojectstudieshowthenatureof
liquidaffectstherateofevaporation.

4. Theory
●Therateofevaporationdependson:
●1.Natureofliquid–weakerintermolecular
forcesincreaserate.
●2.Surfacearea–largerareaincreases
evaporation.
●3.Temperature–highertemperature
increaseskineticenergy.
●4.Airflow–movingairincreases
evaporation.

5. Apparatus&Materials
●•Watchglasses(3–4)
●•Liquids:Water,Acetone,Ethanol,Ether(or
nailpolishremover)
●•Measuringcylinder
●•Stopwatch
●•Thermometer
●•Weighingbalance(optional)

6. Procedure
●1.Takeequalvolumes(5mL)ofeachliquid
inseparatewatchglasses.
●2.Keeptheminthesameenvironment
awayfromdirectsunlight.
●3.Startthestopwatchsimultaneouslyfor
allliquids.
●4.Recordthetimetakenforeachto
evaporatecompletely.
●5.Ensuresamesurfaceareaand
temperatureforallsamples.

7. Observations
●ExampleDataTable:
●Liquid|Volume(mL)|Temperature(°C)|
Time(min)|Rate(mL/min)
●------------------------------------------------------------
●Water|5|30|60|0.083
●Ethanol|5|30|40|0.125
●Acetone|5|30|25|0.200

8. Results
●Therateofevaporationofdifferentliquids
wasfoundinthefollowingorder:
●Acetone>Ethanol>Water
●Liquidswithweakerintermolecularforces
evaporatefaster.

9. Conclusion
●Therateofevaporationdependsonthe
natureofliquidandthestrengthof
intermolecularforces.
●Highertemperatureandgreatersurface
areaincreaseevaporationrate.
●Amongtestedliquids,acetoneevaporated
fastest.

10. Bibliography
●1.NCERTChemistryTextbook–ClassXII
●2.ComprehensiveChemistryLabManual–
ClassXII
●3.www.chemguide.co.uk
●4.Othereducationalresources