This document is a chemistry project report on analyzing commercial antacids. It describes the aim to determine the amount of HCl acid that different antacid samples can neutralize. The procedures include standardizing HCl and NaOH solutions, weighing antacid tablet samples, titrating with HCl until neutralized, and recording the volume of HCl used. The results will show which antacid sample requires the maximum volume of HCl, identifying it as the most effective. Precautions for accurate titration are also outlined.

1. Chemistry Project
AISSCE 2015-16
Aamir Lodi
Roll Number:
ANTACIDS

2. CERTIFICATE
This is to certify that the Project / Dissertation entitled CYCLOTRON is
a bonafide work done by Master Aamir Lodi of class XII Session 2015-
16 in partial fulfillment of CBSE’s AISSCE Examination 2016 and has been
carried out under my direct supervision and guidance. This report or a similar
report on the topic has not been submitted for any other examination and does
not form a part of any other course undergone by the candidate.
………………………… ………………………………. …………………………
Signature of Student Signature of Principle Signature of Teacher/Guide

3. ACKNOWLEDGEMENT
 I undertook this Project work, as the part of my XII- Physics project. I
had tried to apply my best of knowledge and experience, gained during
the study and class work experience.
 I would like to extend my sincere thanks and gratitude to my
teacherMrs ______________ and Mr _____________
I am very much thankful to our Principal Mr. Chopra for giving
valuable time and moral support to develop this software.
 I would like to take the opportunity to extend my sincere thanks and
gratitude to our parents for being a source of inspiration and providing
time and freedom to develop this project.

16. Aayush
Gupta

18. AIM OF PROJECT:
 To analyze the given sample of commercial antacids by determining
the amount of HCl acid they can neutralize.
REQUIREMENTS
 Burette
 Pipette
 Titration flask
 Measuring flask
 Beaker
 Weight box
 Fractional weight
 Sodium hydroxide
 Sodium carbonate
 HCl
 Phenolphthalein / Methyl Orange

19. PROCEDURE
 Prepare 1 litre of HCl solution by diluting 10mL of concentrated acid for 1
litre.
 Similarly, make 1L of NaOH by dissolving 4g of NaOH to 1L solution.
 Prepare Na2CO3 solution by weighing exactly 1.325g of anhydrous Na2CO3
and then dissolve in water to prepare exactly 0.25L of solution.
 Standardize the HCl solution by titrating it against Na2CO3 solution using
methyl orange as indicator.
 Similarly, standardize the NaOH solution by titrating it against standard
HCl solution using phenolphthalein as indicator.
 Powder the various samples of antacid tablets and weigh 1g each.
 Add a specific volume of standardized solution of HCl to each of the
weighing sample taken in a conical flask. The acid should be in slight excess,
so that it can neutralize all the alkaline components of the tablet.
 Add 2 drops of phenolphthalein and warm the flask till most of the powder
dissolves.
 Titrate the solution against the standardized NaOH solution, till a
permanent pinkish tinge is obtained. Repeat the experiment with different
antacids

20. Standardization of HCl solution
Volume of base (N/10) = ml
Sr No Burette
reading (initial)
ml
Burette
reading
(final) ml
Volume of acid
used (ml)
1 0
2 0
3 0
OBSERVATIONS
Concordant reading = ml
Applying normality equation,
N1V1 (Acid) = N2V2 (Base)
N1 x = (1/10) x
Normality of HCl, N1 =

21. Standardization of NaOH solution
Volume of base (N/10) = ml
Sr No Burette
reading (initial)
ml
Burette
reading
(final) ml
Volume of acid
used (ml)
1 0
2 0
3 0
OBSERVATIONS
Concordant reading = ml
Applying normality equation,
N1V1 (Acid) = N2V2 (Base)
N1 x = (1/10) x
Normality of NaOH, N1 =

22. Sr No Antacid Volume of
NaOH used for
neutralizing
unused HCl
Vol. of HCl used
for neutralizing 1
g of antacid
1 ENO
2 Digene
3 Gelusil
ANALYSIS OF ANTACID TABLETS

23. RESULT
 Volume of acid used for neutralization of ENO –
 Volume of acid used for neutralization of Digene –
 Volume of acid used for neutralization of Gelusil –
CONCLUSION
 The antacid for which maximum amount of HCl is used for
neutralization is . It is most effective.
PRECAUTIONS
 Rinse the pipette and burette with the solutions which are to be
filled.
 There should be no air bubble in the nozzle of the pipette.
 Anti parallax card should be used.
 Rubber pinch cork burette should not be used
 Two concordant readings must be taken.
 Lower miniscus of the burette should be read.

24. Bibliography
The Following books were used in the completion of this project:
 Chemistry Laboratory Manual
 Simplified ICSE chemistry
Also, the following websites were consulted for relevant materials:
 Icbse.org
 Google.com
 http://en.wikipedia.org/wiki/Antacids