1. DATA-LOGGING
ACID-BASE TITRATION USING PH SENSOR
NAME: KESAVARTINII A/P BALA KRISNAIN (D20101039444)
CYPRIANA CAYAUS (D20101037509)
BRENDA MITCHELLE MORRIS (D20101037527 )
GROUP : A
PROGRAMME : PENDIDIKAN SAINS
SEMESTER :5
LECTURER : EN. AZMI BIN IBRAHIM

2. DATA LOGGING
 Theprocess where computer used
to collect data through sensors,
data analyzed and saved, and the
results of the collection and
analysis become the output.
 The data logger is the electronic
instrument that records the
measurement over time.

3. COMPONENTS OF DATA
LOGGING SYSTEM

4. Sensors
- Sensor is device that Computer
measure physical - used to record the
quantity and send the data and display the
data in terms of data as table or
voltage to the graph by using
computer to represent specific software
the quantity
Interface
-used to connect between sensors and
computers,
-responsible for converting the voltage from
sensor into digital voltage that can be read by
the computer and prevent excessive voltage that
can damage the computer

5. ADVANTAGES AND
DISADVANTAGES
Advantages Disadvantages
1. New innovative 1. If the data logging
experiments and equipment breaks down,
dangerous some data could be lost
experiments become and not recorded
possible 2. Equipments needed in
2. More accurate result data logging are very
as there is no expensive even if it is
possibility of human just for a small task
error
3. Caused loss of
3. Easier to understand conventional methods of
scientific data collection and
experimentation and reduced the practice of
scientific concept, and graphing skills
better graphing.

6. ENGAGE

7. What we know about acid and bases?
Acids
- Level of pH: 1 to 6
- Example: Lemons, orange juice and vinegar are
examples of acids.
Bases
- Level of pH: 8 to 14
- Example: Mustards and medicines are examples of a
base. Flavor is added to medicines to offset the bitter
taste.
Water
- Level of pH: 7, Natural

8. EMPOWER
ACID-BASE TITRATION USING PH
SENSOR
 Planning and doing experiment

9. PLANNING AND CARRYING OUT
EXPERIMENT
Interface
Data
logger

10. RESULTS

11. FIRST DERIVATIVES OF DATA

12. QUESTIONS
1. What does the graph tell you about the amount of
hydrochloric acid and sodium hydroxide needed for
the titration?
2. What does the first derivatives graph represents?
3. Explain the difference between an endpoint and
equivalence point in a titration.
4. Can we titrate a solution of unknown concentration
with another solution of unknown concentration and
still get a meaningful answer? Explain.
5. What is the chemical equation involved in this acid-
base titration?

13. ENHANCE
1. Citric acid
- Plays a role in one famous stomach remedy, or
antacid.
- Antacids are more generally associated with alkaline
substances, used for their ability to neutralize stomach
acid.
Example : The fizz in Alka-Seltzer;

14. 2. Aluminum hydroxide
-Is an interesting base, because it has a wide number of
applications, including its use in antacids.
- It reacts with and neutralizes stomach acid
(Hydrochloric acid, HCl).
Example: found in commercial antacids such as Di-
Gel™, Gelusil™, and Maalox™(relief of heartburn and
acid indigestion).

15. Di-gel, Gelusil, Maalox

16. 3. Baking soda (sodium bicarbonate and sodium
hydrogen)
- Use in baking and other application such as in Alka-
Seltzer (addition of citric acid to improve the flavour),
fighting fires (smoothers flames by obstructing the
flow of oxygen to the fire)
- Baking Powder = Baking soda + weak acid = carbon
dioxide
(causes dough and batters to rise)

17. QUESTION :
Why Stomach Acid might need to be neutralized?
 substance inside the body that is able to digest the
living tissue around itrequire some of it to be
neutralized.
 when the acid leaks upward through a valve into the
oesophagus, causing what is known as acid reflux or
heartburn.
 heartburn is when the stomach acids get into the
oesophagus and eat away at the lining, causing a
burning sensation in the chest and throat.
 to reduce the leakage of stomach acid into the
oesophagus, neutralization of some of the acid would
be required, avoid the oesophagus receives permanent
damage. In order to do this antacids

18. -THE END-
-THANK YOU-