Density of Potassium Chloride

C (mol/L) 0.00 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00

Set 1 Ww (g) dw (g/mL) ds (g/mL) 50.9878 0.99537 0.99988 50.9921 0.99537 1.00278 50.9878 0.99537 1.00462 50.9921 0.99537 1.00751 50.9878 0.99537 1.00937 50.9921 0.99537 1.01219 50.9878 0.99537 1.01397 50.9921 0.99537 1.01682 50.9878 0.99537 1.01840 50.9921 0.99537 1.02137 50.9878 0.99537 1.02349 50.9921 0.99537 1.02592 50.9878 0.99537 1.02801 50.9921 0.99537 1.03059 50.9878 0.99537 1.03237 50.9921 0.99537 1.03523 50.9878 0.99537 1.03733 50.9921 0.99537 1.03980 50.9878 0.99537 1.04157 Exp ds 0.99537 0.99988 1.00279 1.00462 1.00751 1.00937 1.01218 1.01397 1.01682 1.01840 1.02137 1.02349 1.02592 1.02801 1.03060 1.03236 1.03523 1.03733 1.03979 1.04157

Est ds 0.99561 1.00025 1.00257 1.00488 1.00720 1.00952 1.01184 1.01416 1.01648 1.01880 1.02111 1.02343 1.02575 1.02807 1.03039 1.03271 1.03502 1.03734 1.03966 1.04198

%RE -0.02411 -0.03675 0.02201 -0.02644 0.03067 -0.01486 0.03395 -0.01822 0.03355 -0.03833 0.02464 0.00596 0.01677 -0.00561 0.02024 -0.03325 0.01962 -0.00116 0.01263 -0.03898

Densities of Potassium Chloride

1.050

1.040

1.030

1.020

1.010

1.000

y = 0.04642x + 0.99558 R2 = 0.99964

0.990 0.0

Ws = Mass of solution in a pyknometer Ww = Mass of water in the same pyknometer dw =Density of water at the temperature of observation ds = Density of solution at the same temperature C = Concentration of the solution Exp ds = Experimental density Est ds = Estimated density %RE = Percent relative error The following equation was used for density calculation:

ds/dw = Ws/Ww

Set 2 Ww (g) dw (g/mL) ds (g/mL) 50.9878 0.99537 0.99988 50.9921 0.99537 1.00279 50.9878 0.99537 1.00462 50.9921 0.99537 1.00751 50.9878 0.99537 1.00937 50.9921 0.99537 1.01218 50.9878 0.99537 1.01397 50.9921 0.99537 1.01682 50.9878 0.99537 1.01841 50.9921 0.99537 1.02136 50.9878 0.99537 1.02349 50.9921 0.99537 1.02592 50.9878 0.99537 1.02801 50.9921 0.99537 1.03060 50.9878 0.99537 1.03236 50.9921 0.99537 1.03523 50.9878 0.99537 1.03733 50.9921 0.99537 1.03979 50.9878 0.99537 1.04158

Ws (g) 51.2189 51.3567 51.4617 51.5985 51.7050 51.8377 51.9407 52.0752 52.1678 52.3080 52.4284 52.5415 52.6598 52.7809 52.8826 53.0180 53.1372 53.2516 53.3547

Density (g/mL)

Ws (g) 51.2187 51.3564 51.4614 51.5986 51.7050 51.8379 51.9408 52.0751 52.1677 52.3081 52.4284 52.5414 52.6599 52.7807 52.8829 53.0180 53.1373 53.2520 53.3545

0.2

0.4

0.6

Conc. (mol/L)

0.8

1.0