Data logging experiment
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Transcript of Data logging experiment
DATA LOGGER :
ACID-BASE TITRATION
Khodijah bt Ahamad Ariffin
(D20101037507)
Nur Azuaniza bt Hasnan (D20101039445)
Siti Hafsah bt Hj Mohtar (D20101037434)
ENGAGEMENTWHAT THE TASTE OF SOAP AND LEMON?
WHAT ABOUT THE PH VALUE?
ACID-BASE TITRATION
EXPERIMENT
EMPOWER
The objectives of this experiment are manifold:
1)To construct acid-base titration curves in a very similar way to that offered by automatic titrators.
2)To learn some of the principles associated with acid-base titration curves by using DrDAQ as an educational tool.
3)To use the generated titration curves to determine the concentration of some analytes in common samples such: as acetic acid in vinegar, and sodium bicarbonate in baking powder.
Equipment required DrDAQ
Glass combination pH electrode.
One beaker (125 ml).
Magnetic stirrer-magnet bar
Air pump (JUN ACO 9903) (can demonstrate the validity of the experiment) for higher accuracy and reliability a peristaltic or syringe pump is preferred.
Tygon Tubing.
1 l glass bottle with tight lid.
0.1 mol/l HCl. 0.1 mol/l NaOH.
0.1 mol/l Na2CO3.
Vinegar.
Graduated cylinder, 25 ml.
5 ml graduated pipette.
25 ml pipette.
THE PROCEDURE
Part 1: determination of unknown HClconcentration (standardization of HCl)
Part 2: determination of the concentration of sodium hydroxide solution
Part 3: determination of the content of sodium bicarbonate commercial baking powder
Part 4: determination of acetic acid content in vinegar
Part 5: comparison between the titration of acetic acid and HCl with NaOH:
THE SET UP OF EXPERIMENT
RESULT FOR THE EXPERIMENT
TITRATION CURVE OF SODIUM CARBONATE AGAINST HCL
TITRATION CURVE OF NAOH AGAINST HCL
Part 1 Part
2
TITRATION CURVE OF BAKING POWDER AGAINST HCL
TITRATION CURVE OF VINEGAR AGAINST NAOH
Part 3 Part 4
TITRATION CURVE OF HCL AGAINST NAOH
Part 5
ENHANCEMENT
DO YOU LIKE TO EAT?
IS THE PH VALUE FOR EVERY FOODS IS SAME?
To guard against acid loads from food
consumption and tissue metabolism, we
have 3 main regulatory systems:
Buffer systems that work in cellular fluid and
the bloodstream to keep pH constant
The respiratory centre (aka the lungs and
oxygen or carbon-dioxide carrying structures)
Kidney regulation
ACID-BASE BALANCING=TITRATION
IF PH LEVELS AREN’T BALANCED,
this can mean negative health outcomes that include:
Decreased growth factors
Growth hormone resistance
Mild hypothyroidism
Loss of muscle mass
Enzymatic changes in cells
Altered regulation of metabolites and minerals
Decreased uptake and release of oxygen