COMPILED BY: PIYUSH ANAND

XIITH ROLL NO.

About the ProjectAim of the ProjectMaterials RequiredTest Performed on Various Soft DrinksGraphCharring TestCharring Test ResultPie Chart Soft drinks and healthConclusionBibliography

ABOUT THE PROJECT

Me and my friends have found that the “Qualitative Analysis of various soft drinks” the most interesting and informative among the list of projects in curriculum.

Several tests were done on various soft drinks brought in the school laboratory under the able guidance of our chemistry teacher “Mr. ……………………………………”.

We did the test for the presence of glucose, sucrose & ethyl alcohol. Charring tests were done to find the amount of sugar contents in the brands. The pH values of the drinks were found using pH scale provided.

Thus, we were able to compare the various brands of soft drinks and thereby make proper graph to show accurate comparisons.

AIM OF THE PROJECT

The “Qualitative Analysis of Various Brands of Soft Drinks” aims at finding the various contents of the soft drinks.

We find their pH values and compare their effervescence time. Tests are done to detect the presence of Glucose, Sucrose & Ethyl Alcohol.

Charring tests are performed to compare the amount of sugar present in various soft drinks.

MATERIALS REQUIRED

Sample of cold drinkspH papersStop WatchFehling’s solution I & IIBenedict’s solutionDilute Hydrochloric acidSodium HydroxideIodine solutionTest TubesTest Tube HolderChina dishesBeakersPetri dishes

GRAPH OF pH VALUES

pH value

3.1

2.5

3.5 3.4

3.8

2.5

0

0.5

1

1.5

2

2.5

3

3.5

4

Thums-up Mirinda Limca Pepsi Soda Gold Spot

SOFT DRINK AND HEALTH

CHARRING TEST

This is actually a heating test to find the amount of residue left in the various brands of soft drinks after heating. This ultimately tells us about the level of sugar present in various soft drinks.

In the test the sample (5ml) of each soft drink is taken in separate china dishes and heated for sufficient time to dry it out. Then the residue left is studied.

It was observed that the maximum amount of residue was left in the case of GOLD SPOT while minimum in SODA.

The residue left in all brands is put into a pie chart.

pH Value

Limca

Soda

Pepsi

Gold Spot

Thums-Up

Mirinda

Soft drinks provide large amounts of sugars (mostly high fructose corn syrup) to many individuals’ diets. The calories of soft drinks are likely to contribute to health problems, particularly overweight and obesity. Those conditions have become far more prevalent during the period in which soft drink consumption has soared. Several scientific studies have provided experimental evidence that soft drinks are directly related to weight gain. That weight gain, in turn is a prime risk factor for type 2 diabetes, which for the first time, is becoming a problem for teens as well as adults. As people get older, excess weight also contributes to heart attacks, strokes and cancer.

Frequent consumption of soft drinks may also increase the risk the risk of osteoporosis especially in people who drink soft drinks instead of calcium rich milk. Dental experts continue to urge that people drink less soda pop, especially between meals, to prevent tooth decay (due to sugars) and dental erosion (due to acids).

Frequent consumers of soft drinks may also be at a higher risk of kidney stones and a slightly higher risk of heart disease. More research is needed in both of these areas.

Researches around the world has thus established beyond doubt that soft-drinks consumption is injurious to health.

ACKNOWLEDGEMENT

This project placed here, is a result of the kind guidance, careful supervision and timely assistance rendered to me by our honorable chemistry teacher “Mr……………………………………….. ”.

This project would not have been completed without the timely suggestion provided by our honorable teacher who carefully groomed and nurtured throughout the academic year.

I must not forget to mention the help given to me by my friends.

At last I would like to thank my parents and my sister who helped me in doing this project.

GOLD SPOT

Taste : ORANGE Color : ORANGE pH Value : 2.5 Effervescence : 12 sec

CHEMICAL ANALYSIS Sucrose Test :Present

Sample + dil HCL + NaOH + Benedict’s sol. Orange ppt.

Glucose Test : PresentSample + Fehling’s sol. I & II red ppt.

Ethyl Alcohol Test : PresentSample + Iodine sol. + NaOH Brown ppt.

LIMCA

Taste : Lemon Color : Creamish White pH Value : 3.1 Effervescence : 5 sec

CHEMICAL ANALYSIS Sucrose Test :Present

Sample + dil HCL + NaOH + Benedict’s sol. Orange ppt.

Glucose Test : Present Sample + Fehling’s sol. I & II red ppt.

Ethyl Alcohol Test : Present Sample + Iodine sol. + NaOH Brown ppt.

MIRINDA

Taste : orange Color : orange pH Value : 2.5 Effervescence : 12 sec

CHEMICAL ANALYSIS Sucrose Test :Present

Sample + dil HCL + NaOH + Benedict’s sol. Orange ppt.

Glucose Test : PresentSample + Fehling’s sol. I & II red ppt.

Ethyl Alcohol Test : PresentSample + Iodine sol. + NaOH Brown ppt.

PEPSI

Taste : Light Color : blackish brown pH Value : 3.1 Effervescence : 570 sec

CHEMICAL ANALYSIS Sucrose Test :Present

Sample + dil HCL + NaOH + Benedict’s sol. Orange ppt.

Glucose Test : Present Sample + Fehling’s sol. I & II red ppt.

Ethyl Alcohol Test : Present Sample + Iodine sol. + NaOH Brown ppt.

SODA

Taste : Bitter Color : Colourless pH Value : 3.4 Effervescence : 1200 sec

CHEMICAL ANALYSIS Sucrose Test :absent

Sample + dil HCL + NaOH + Benedict’s sol.no ppt.

Glucose Test : absent Sample + Fehling’s sol. I & II no ppt.

Ethyl Alcohol Test : absent Sample + Iodine sol. + NaOH no ppt.

THUMS-UP

Taste : bitter Color : Chocolate brown pH Value : 3.1 Effervescence : 90 sec

CHEMICAL ANALYSIS Sucrose Test :Present

Sample + dil HCL + NaOH + Benedict’s sol. Orange ppt.

Glucose Test : Present Sample + Fehling’s sol. I & II red ppt.

Ethyl Alcohol Test : Present Sample + Iodine sol. + NaOH Brown ppt.

CONCLUSION

In the end I would like to mention about the important result in this interesting and exciting project.

Most of the brands of soft drinks are chemically very similar except soda water which is actually carbonated water and can’t be considered as soft drink.

All the brands have glucose, sucrose & ethyl alcohol except soda. The difference lies only in the, color, name of the brand and its flavor. This is the reason why everyone’s favorite brand keeps on changing and to satisfy the public, companies keep changing the colors and flavors.

CERTIFICATEThis is to certify that PIYUSH ANAND of class XIIth, Roll no. __________________has successfully completed this project in chemistry on “Qualitative Analysis of various soft drinks”. Under my guidance he has completed the mandatory project as a part of C.B.S.E curriculum of CLASS XIIth.

Mr. ………………………………………………….(CHEMISTRY TEACHER,MOTHER’S INTERNATIONAL ACADMEY)

BIBLIOGRAPHY

Comprehensive chemistry by Dr. N.K.VermaPradeep’s New Course Chemistry by S.C.KheterpalABC Of chemistryLab manual in chemistry – Arya book Depot