The following data were obtained for a series of binary mixtures of benzene, and cyclohexane at 20°C. Wt % Benzene 1.38490 1.41071 1.43396 10.86 36.48 55.98 70.41 1.45334 82.83 1.47115

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13-2. The following data were obtained for a series of binary mixtures of
benzene, and cyclohexane at 20°C.
Wt % Benzene
10.86
1.38490
1.41071
36.48
55.98
70.41
82.83
1.43396
1.45334
1.47115
(a) Plot the data.
(b) Derive an equation for the line assuming a linear relationship.
(c) Calculate the standard deviation for the slope and about re-
gression.
d) Calculate the weight percent benzene in a mixture that had a
refractive index of 1.43216.
(e) Calculate the standard deviation of the result found in part
(d).
(f) The mean of 3 refractive index measurements of a benzene/
cyclohexane mixture was 1.46437. Calculate the weight per-
cent benzene.
(g) Calculate the standard deviation of the result found in part (f).
Transcribed Image Text:13-2. The following data were obtained for a series of binary mixtures of benzene, and cyclohexane at 20°C. Wt % Benzene 10.86 1.38490 1.41071 36.48 55.98 70.41 82.83 1.43396 1.45334 1.47115 (a) Plot the data. (b) Derive an equation for the line assuming a linear relationship. (c) Calculate the standard deviation for the slope and about re- gression. d) Calculate the weight percent benzene in a mixture that had a refractive index of 1.43216. (e) Calculate the standard deviation of the result found in part (d). (f) The mean of 3 refractive index measurements of a benzene/ cyclohexane mixture was 1.46437. Calculate the weight per- cent benzene. (g) Calculate the standard deviation of the result found in part (f).
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