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How does the molar absorptivity depend upon the concentration mole per L of the dissolved solute?
Molar absorptivity is completely independent of concentration of a substance as Molar absorptivity is represented by epsilon and is a constant. Absorbance of light is what is dependent upon concentration and will go down as concentration goes down and increase as concentration increases.
What is the molar absorptivity of Cu2 plus at 620 nm given that the cuvettes used in lab had a pathlength of 1.00 cm with a concentration verse absorbtivity curve of y equals .727x plus .0557?
.727/g*M, slope is molar absorbtivity
Is there any difference between beer Lambert's law and Lambert beer's law?
Beer's law says that absorbance of a molecule or solution is:A = a*b*cwhere A is the absorbance, "a" is the absorptivity (in units of per molar per cm, M-1 cm-1), "b" is the path length (in units of centimeters, cm), and "c" is the concentration (in units of molar, M). The absorptivity, is also commonly known as epsilon.That means that the absorbance is linearly proportional to the thickness of the sample, the concentration of the absorbing medium, and the absorptivity, which is a measure of a given molecule's ability of absorb light.See the Web Links for more information.
How do you determine molar absorptivity of cobalt nitrate?
Utilizing the Beer-Lamber Law you have A=abc here A= is the absorbance at a set wavelength a= the molar absorbtivity b= the path length c= concentration in molar The best way to determine a is to make solutions of known concentrations of cobalt nitrate (3-5 would be best) and determine the absorbance of each solution. Next plot the Abs vs concentration of each solution using something like excel or R. Determine the line of best fit ( it's important to force fit this line through 0) the R-sqr value should be no less than .95 Since the equation of a line is : y=mx +b, this is equivalent to A=abc noting that b is assumed to be 1cm we habe A=ac, where m=a and x=c In short the slope of the line of best fit in the molar absorbtivity
What do you mean molar extinction co efficient what information can be obtain from it?
The molar extinction coefficient (also sometimes called molar absorbtivity coefficient) is a measure of how strongly a solution of a substance absorbs light (the value depends on the particular wavelength of light used). By passing light through a solution and determining how much of the light is absorbed, you can use the path length and molar extinction coefficient to determine the concentration of the solution.Look up "Beer-Lambert law" if you want details.
Why can you not measure the molar absorptivity of the food dyes?
You can.
How does the molar absorptivity depend upon the concentration mole per L of the dissolved solute?
Molar absorptivity is completely independent of concentration of a substance as Molar absorptivity is represented by epsilon and is a constant. Absorbance of light is what is dependent upon concentration and will go down as concentration goes down and increase as concentration increases.
Why is hydrochloric acid added in a molar absorptivity of benzoic acid?
It is added to protonate the sodium benzoate.
Could you please define the extinction coefficient?
The extinction coefficient can refer to a few different measures how strongly a distinct medium absorbs light at a particular wavelength. The two most commonly referred to are molar absorptivity (which measures absorption per molar concentration) and the mass attenuation coefficient (which measures absorption per mass density).
What is the molar absorptivity of crystal violet?
The molar absorptivity of crystal violet can be determined using Beer's Law. Beer's Law is A=E*c*l where A is absorbance, E is the molar absorptivity, C is the concentration of the crystal violet, and l is the path length. Path length is how long the light has to travel through the solution. If you can find the absorbance of a certain concentration by using a spectrophotometer, where the path length is 1 cm, then you know all the variables and are able to solve for the molar absorptivity. For example, the measured absorbance of 2.5x10^-5 M CV (crystal violet) is 1.64 with a path length of 1 cm. This means 1.64=E*(2.5x10^-5)*1 E=1.64/(2.5x10^-5) E=65600 Happy Chemistry!
What Beers law?
Beer's law says that absorbance of a molecule or solution is:A = a*b*cwhere A is the absorbance, "a" is the absorptivity (in units of per molar per cm, M-1 cm-1), "b" is the path length (in units of centimeters, cm), and "c" is the concentration (in units of molar, M). The absorptivity, is also commonly known as epsilon.That means that the absorbance is linearly proportional to the thickness of the sample, the concentration of the absorbing medium, and the absorptivity, which is a measure of a given molecule's ability of absorb light.See the Web Links for more information.
What is the molar absorptivity of Cu2 plus at 620 nm given that the cuvettes used in lab had a pathlength of 1.00 cm with a concentration verse absorbtivity curve of y equals .727x plus .0557?
.727/g*M, slope is molar absorbtivity
Which formula do you use for the calculation of absorptivity?
ANSWER:"e is a measure of the amount of light absorbed per unit concentration".Molar absorbtivity is a constant for a particular substance, so if the concentration of the solution is halved so is the absorbance, which is exactly what you would expect.The formula for the molar absorptivity is given as followings:A=ecle=A/cle = the molar absorptivitywhere A is known as the A is known as the absorbance, l measures the length of the solution the light passes through,c is theconcentration of solution in mol /dm^3.Remember that the absorbance of a solution will vary as the concentration or the size of the container varies. Molar absorptivity compensates for this by dividing by both the concentration and the length of the solution that the light passes through. Essentially, it works out a value for what the absorbance would be under a standard set of conditions - the light travelling 1 cm through a solution of 1 mol dm-3. a
How does temperature effect wavelength?
How does temperature affect wavelength?
Is there any difference between beer Lambert's law and Lambert beer's law?
Beer's law says that absorbance of a molecule or solution is:A = a*b*cwhere A is the absorbance, "a" is the absorptivity (in units of per molar per cm, M-1 cm-1), "b" is the path length (in units of centimeters, cm), and "c" is the concentration (in units of molar, M). The absorptivity, is also commonly known as epsilon.That means that the absorbance is linearly proportional to the thickness of the sample, the concentration of the absorbing medium, and the absorptivity, which is a measure of a given molecule's ability of absorb light.See the Web Links for more information.
What affect would an incorrect reading of temperature have on the molar mass?
Temperature has no effect on molar mass
What effect if any does the increasing the speed of the plunger have on the wavelength of the wave?
It will shorten the wavelength.
