Homework Answers
The beer Lambert’s equation is
A = εCb
The line equation is
y = 1.3741 x
Given that conc. = x = 0.6
Absorbance = y = 1.3741 x = 1.3741 × 0.6 = 0.82446 = 0.82
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The following data was collected using a spectrophotometer Concentration (M) Absorbance 0.2 0.27 0.3 0.41 0.4...
#4-5 beer's law 4. Using the data below find the concentration of a 1.10 cm (path...
#4-5 beer's law
4. Using the data below find the concentration of a 1.10 cm (path length) sample that has an absorbance of 0.592 Concentration (M) 0.20 0.30 Absorbances 0.27 0.41 0.40 0.50 0.55 0.69 The molar absorptivity constant of a particular chemical is 1.3/M cm. What is the concentration of a solution made from this chemical that has an absorbance of 0.66 with a cell path length of 1.1 cm?
Keq determination 1 0.9 2900X 0.00 R -0.9985 08 Absorbance 0.7 0.6 0.5 0.4 0.3 0.2...
Keq determination 1 0.9 2900X 0.00 R -0.9985 08 Absorbance 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.00005 0.0003 0 0.00035 0.0001 0.00015 0.0002 0.00025 Concentration of Fe(SCN)2-(M) To determine the Key for the above reaction, 10.00 mL of 0.00200 M Fe(NO3); solution is mixed with 5.00 ml of 0.0020 M KSCN and diluted with 5.0 ml of 0.10 M HNO3. The absorbance of this red solution is found to be 0.322. Answer the following questions in sequence to...
Can't figure out the concentration of the complex of solns. 10, 11, 12, 13, & 14. Modern...
Can't figure out the concentration of the complex of
solns. 10, 11, 12, 13, & 14.
Modern Experimental Chemistry Chemistry 153 The Iron(III) Thiocyanate Complex Purpose of the Experiment To determine the chemical formula of a complex ion and measure its formation equilibrium constant Equipment Spectro Vis spectrophotometer and LabQuest, cuvette, 25-mL buret (3), ring stand, buret clamp (2), 50-mL beaker (3), small plastic beakers Reagents SCN, as KSCN, 0.00200 M solution Fe; as Fe(NO), 0.00200 M solution and a...
#4-5 beer's law
4. Using the data below find the concentration of a 1.10 cm (path length) sample that has an absorbance of 0.592 Concentration (M) 0.20 0.30 Absorbances 0.27 0.41 0.40 0.50 0.55 0.69 The molar absorptivity constant of a particular chemical is 1.3/M cm. What is the concentration of a solution made from this chemical that has an absorbance of 0.66 with a cell path length of 1.1 cm?
Keq determination 1 0.9 2900X 0.00 R -0.9985 08 Absorbance 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.00005 0.0003 0 0.00035 0.0001 0.00015 0.0002 0.00025 Concentration of Fe(SCN)2-(M) To determine the Key for the above reaction, 10.00 mL of 0.00200 M Fe(NO3); solution is mixed with 5.00 ml of 0.0020 M KSCN and diluted with 5.0 ml of 0.10 M HNO3. The absorbance of this red solution is found to be 0.322. Answer the following questions in sequence to...
Can't figure out the concentration of the complex of
solns. 10, 11, 12, 13, & 14.
Modern Experimental Chemistry Chemistry 153 The Iron(III) Thiocyanate Complex Purpose of the Experiment To determine the chemical formula of a complex ion and measure its formation equilibrium constant Equipment Spectro Vis spectrophotometer and LabQuest, cuvette, 25-mL buret (3), ring stand, buret clamp (2), 50-mL beaker (3), small plastic beakers Reagents SCN, as KSCN, 0.00200 M solution Fe; as Fe(NO), 0.00200 M solution and a...
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