HOW DOES INCREASING THE CONCENTRATION BY MASS OF SODIUM CHLORIDE OF WATER AFFECT THE INDEX OF REFRACTION OF THE AQUEOUS SOLUTION?

Group 33

Jihoon Sung, Kevin Lee,

Hyunwoo Cho, Changhoon Ji

BACKGROUND & SET UP

Concept of refraction Index of refraction

Test concentration values

PROCEDURE & MATERIALS

Retort StandHe-Ne Laser

Glass Vessel with ProtractorDistilled water

NaCl (table salt)

Electronic Balance

Beaker

ANGLE OF INCIDENCECONTROLLING CONCENTRATIONSWEIGHING SALTPOURING SALTSTIRANGLE OF REFRACTIONCALCULATION

DATA COLLECTION • Angle of Incidence: 42• Sine angle of Incidence: 0.669

Raw ProcessedTable: Index of Refraction for increasing salt concentration of water by mass

ANALYSIS OF DATA

CONCLUSION & EVALUATION

Linear correlation (0.998)

Limitations Improvements

Linear regression

Calculation

Precision

IOR Water Accuracy (1.33)