Study on Acidity of Fruits and Vegetables Juices

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1. Chemistry Study on Acidity of Fruits and Vegetables Juices S.N.B.P International School Affiliation no.-1130522 Submitted to:- Komal Bandekar (Chemistry Subject Teacher) Submitted by:- Vansh Patil Class/Section-11th/C Roll no.-S11C36

2. Certificate It is hereby certified that original and genuine research work is carried out to investigate about the subject matter and the related data collection has been completely solely and satisfied by Vansh Patil regarding the project titled Study on Acidity of Fruits and Vegetables Juices

3. Acknowledgement I owe my thanks to our principal for providing laboratory facilities and for her valuable guidance. A lot of thanks to my chemistry teacher Komal Mam/Vijayalakshmi Mam who encouraged me in doing this project successfully and provided the required apparatus to perform my project work. Name-Vansh Patil

4. Index Introduction Aim Materials Required Fruits Used Procedure Observations Result

5. Introduction Fruit Juices are generally consumed by most of the people in the world or we can say, they are the most consumed drinking items all over the world. But did we know about their effects on our body.

6. What is pH? pH stands for “Potential of power of H+ ion”. It is the measurement of Acidity or basically of an aqueous solution. Mathematically, pH is the negative logarithm of the activity o the hydronium ion, more often expressed as the measure of the hydronium ion concentration. Mathematically, or  

7. pH Indicators A pH indicator is a chemical compound that is added in small amounts to a solution so that the pH of the solution can be determined visually. Normally, the indicator causes the color of the solution to change in other physical properties for e.g., Olfactory indicators show change in their odour. Some pH indicators are: Phenolphthalein, methyl orange and litmus, pH Paper

8. The pH scale The pH scale is a scale which measures how acidic or basic a substance is. A pH of less than 7 is Acidic. A pH of 7 is neutral. A pH greater than 7 is Basic.

9. Aim To study the acidity in fruits and vegetable juices.

10. Materials Required Test tubes Burner Litmus Paper Various Fruit juices

11. Fruits used Orange Apple Pomegranate Guava

12. Procedure Take 5ml of juice in a test tube. Dip a pH paper in the test tube. If pH is less than 7, the juice is acidic. If pH is more than 7, the juice is basic.

13. Observations The table shows the type and pH value of the most used fruit juices. Most of the juices are acidic in nature. Name of Juice pH Value Orange juice 2.8 to 4 Apple juice 3 to 4.5 Pomegranate juice 3.5 to 4 Guava juice 3.4 to 4

14. Results After conducting the tests, it was concluded that the different types of juices namely, Lemon juice, Orange juice, Apple juice, Guava juice, all are acidic in nature. Reason of acidity: Fruit juices are generally acidic because of the presence of Citric acid and Phosphoric acid. pH values of juices of different due to the variation in number of acidic contents.