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Calculation of Density of Water at 24oCVolume of the density bottle= 25 mlMass of empty density bottle= 13.569 gMass of empty density bottle and water= 38.494 gMass of water= 38.494 13.569 = 24.925 gDensity of water= = = 0.997 gcm-3Error in Density d= = + d= ( + ) x d= ( + ) x 0.997 = 0.004 Density of Water= 0.997 0.004 gcm-3
Calibration of Measuring Cylinder 50 cm3 Mass of empty measuring cylinder= 84.472 gTheoretical Volume of measuring cylinder = 50cm3Calibration No.Mass of measuring cylinder + water (g)Mass of water (g)
1
134.45149.979
2
134.42949.957
3
134.43249.960
Average Mass
49.965 (to 3 d.p)
Practical volume of measuring cylinder= = = 50.116 cm3 (to 3 d.p)Error in Volumev= = + v= ( + ) x v= ( + ) x 50.116 = 0.2That is Error in Volume= 0.2Percentage error= = 0.4 %
Calibration of Volumetric FlaskMass of empty Volumetric Flask= 64.425 gTheoretical Volume of Volumetric Flask= 100 cm3Calibration No.Mass of Volumetric Flask + water (g)Mass of water (g)
1
164.435100.010
2
164.441100.016
3
164.446100.021
Average Mass
100.016 (to 3 d.p)
Practical volume of Volumetric Flask= = = 100.317 cm3 (to 3 d.p)Error in Volumev= = + v= ( + ) x v= ( + ) x 100.317 = 0.4That is Error in Volume= 0.4Percentage error= = 0.8 %
Calibration of Graduated Pipette Mass of empty Beaker used for weighing water= 49.742 gTheoretical Volume of Graduated Pipette= 25 cm3Calibration No.Mass of Beaker + water (g)Mass of water (g)
1
75.26325.521
2
74.89925.157
3
75.02125.279
Average Mass
25.319
Practical volume of Graduated Pipette= = = 25.395 cm3 (to 3 d.p)
Error in Volumev= = + v= ( + ) x v= ( + ) x 25.395 That is Error in Volume= 0.1
Percentage error= = 0.4 %
Calibration of Conical Flask Mass of empty Conical Flask= 128.179 gTheoretical Volume of Conical Flask= 200 cm3Calibration No.Mass of Conical Flask + water (g)Mass of water (g)
1
328.190200.011
2
328.281200.102
3
328.195200.016
Average Mass
200.043
Practical volume of Conical Flask= = = 200.645 cm3 (to 3 d.p)
Error in Volumev= = + v= ( + ) x v= ( + ) x 200.645 That is Error in Volume= 0.8
Percentage error= = 0.4 %
Calibration of Bulb Pipette Mass of empty Beaker used for weighing water= 49.742 gTheoretical Volume of Bulb Pipette= 25 cm3Calibration No.Mass of Beaker + water (g)Mass of water (g)
1
74.76325.021
2
74.75225.010
3
74.75325.011
Average Mass
25.014
Practical volume of Graduated Pipette= = = 25.089 cm3 (to 3 d.p)
Error in Volume v= = + v= ( + ) x v= ( + ) x 25.089 That is Error in Volume= 0.1
Percentage error= = 0.4 %
Calibration of Burette Mass of empty Beaker used for weighing water= 49.742 gTheoretical Volume of Burette= 50 cm3Calibration No.Mass of Beaker + water (g)Mass of water (g)
1
99.74350.001
2
99.76450.022
3
99.75850.016
Average Mass
50.013
Practical volume of Burette= = = 50.163 cm3 (to 3 d.p)
Error in Volumev= = + v= ( + ) x v= ( + ) x 50.163That is Error in Volume= 0.2
Percentage error= = 0.4 %