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3. The absorbance of an equilibrium mixture containing FeSCN2+ was measured at 447 nm and found...
what is number 3 and 4? thank you. TT 3. A solution of [FeSCN2] is found...
what is number 3 and 4? thank you.
TT 3. A solution of [FeSCN2] is found to have 23% transmittance at 447 nm. If the molar absorption coefficient (e) is 4400 ( M cm) at y 447 nm, what is the concentration of [FeSCN] in the solution? Assume a 1 cm path length. (Show all work.) 4. A student mixes 5.00 mL of 0.0020 M Fe(NO.), with 3.00 mL of 0.0020 M KSCN Solution and 2.00 mL water at a...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.906...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.906 at 443 nm and an absorbance of 0.778 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (ε) of X and Y at each wavelength are shown in the table below. wavelength Molar Absorptivity (E M^-1cm^-1) Lambda,nm X Y 443 1.600x10^4 3775 520 3893 6264 What are the Concentration of X and Y. Thank you!!
A solution containing a mixture of the compounds X and Y had an absorbance of 0.729...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.729 at 443 nm and an absorbance of 0.626 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (elementof) of X and Y at each wavelength are shown in the table below. What are the concentrations of X and Y in this mixture?
1) Consider the following equilibrium: Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq) Initial concentrations: [Fe3+] = 0.590; [SCN-]...
1) Consider the following equilibrium: Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq) Initial concentrations: [Fe3+] = 0.590; [SCN-] = 1.239; [FeSCN2+] = 0 The equilibrium concentration of [FeSCN2+]eq = 0.454 M. What is the numerical value of KC for this equilibrium? KC = __________________ 2) Consider the following equilibrium: Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq) Initial concentrations: [Fe3+] = 0.370; [SCN-] = 0.777; [FeSCN2+] = 0 The equilibrium concentration of [FeSCN2+]eq = 0.285 M. What is the equilibrium concentration of Fe3+? [Fe3+]eq =...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.885...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.885 at 443 nm and arn absorbance of 0.760 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (e)of X and Y at each wavelength are shown in the table below. Wavelength Molar Absorptivity (E, Mcm) A, nm 443 520 16910 3989 4114 6619 What are the concentrations of X and Y in this mixture? Number Number
A mixture is prepared by combining 10.20 mL of 1.80 x 10-3 M Fe(NO3)3 with 10.00...
A mixture is prepared by combining 10.20 mL of 1.80 x 10-3 M Fe(NO3)3 with 10.00 mL of 1.68 x 10-3 M KSCN. The solution turns red due to the formation of FeSCN2+. The absorbance is measured and, using a calibration plot, the [FeSCN2+] at equilibrium is found to be 2.20 x 10-4 M. Complete the following ICE table Fe3+ + SCN- ⇌ FeSCN2+ initial (M) (A) (B) (C) change (M) (D) (E) (F) equilibrium (M) (G) (H) (I) What...
Please show work! A solution containing a mixture of the compounds X and Y had an absorbance of 1.06 at 443 nm and...
Please show work!
A solution containing a mixture of the compounds X and Y had an absorbance of 1.06 at 443 nm and an absorbance of 0.909 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (C) of X and Y at each wavelength are shown in the table. Wavelength (2. nm) Molar Absorptivity (M 'cm ) 3507 443 520 14860 3616 5818 What are the concentrations of X and Y in this mixture? Transmittance (%)...
5. A student does an experiment to determine the equili but at a higher temperature. ermine...
5. A student does an experiment to determine the equili but at a higher temperature. ermine the equilibrium constant for the same reaction that you will study, Fe** (aq) + SCN (aq) FeSCN2+ (aq) The student prepares solution 1, by mixing 5. s Solution, by mixing 5.00 ml of 0.002 M Fe(NO2)2 solution with 5.00 mL of .00011M KSCN solution, heats the mixture, and finds that the equilibrium concentration of F and finds that the equilibrium concentration of FeSCN2+ in...
A student made solution #3 using the experimental method in this lab, and measured an absorbance of 0.559. The starting...
A student made solution #3 using the experimental method in this
lab, and measured an absorbance of 0.559. The starting reagents are
2.00 x 10-3 M Fe(NO3)3 and 2.00 x
10-3 M KSCN.
The amount of absorption is proportional to the concentration
of
FeSCN2+. This relationship – true for many solutions – is called
“Beer’s Law”, and has the simple equation:
A = bc
where “A” is the absorption, “b” is 5174.6 for FeSCN2+ and “c”
is molarity
Make Five...
What's the concentration of [FeSCN2+] using limiting reactant theory and equation? For each test tube solution...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
what is number 3 and 4? thank you.
TT 3. A solution of [FeSCN2] is found to have 23% transmittance at 447 nm. If the molar absorption coefficient (e) is 4400 ( M cm) at y 447 nm, what is the concentration of [FeSCN] in the solution? Assume a 1 cm path length. (Show all work.) 4. A student mixes 5.00 mL of 0.0020 M Fe(NO.), with 3.00 mL of 0.0020 M KSCN Solution and 2.00 mL water at a...
A solution containing a mixture of the compounds X and Y had an absorbance of 0.729 at 443 nm and an absorbance of 0.626 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (elementof) of X and Y at each wavelength are shown in the table below. What are the concentrations of X and Y in this mixture?
A solution containing a mixture of the compounds X and Y had an absorbance of 0.885 at 443 nm and arn absorbance of 0.760 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (e)of X and Y at each wavelength are shown in the table below. Wavelength Molar Absorptivity (E, Mcm) A, nm 443 520 16910 3989 4114 6619 What are the concentrations of X and Y in this mixture? Number Number
Please show work!
A solution containing a mixture of the compounds X and Y had an absorbance of 1.06 at 443 nm and an absorbance of 0.909 at 520 nm when measured with a 1.00 cm cell. The molar absorptivities (C) of X and Y at each wavelength are shown in the table. Wavelength (2. nm) Molar Absorptivity (M 'cm ) 3507 443 520 14860 3616 5818 What are the concentrations of X and Y in this mixture? Transmittance (%)...
5. A student does an experiment to determine the equili but at a higher temperature. ermine the equilibrium constant for the same reaction that you will study, Fe** (aq) + SCN (aq) FeSCN2+ (aq) The student prepares solution 1, by mixing 5. s Solution, by mixing 5.00 ml of 0.002 M Fe(NO2)2 solution with 5.00 mL of .00011M KSCN solution, heats the mixture, and finds that the equilibrium concentration of F and finds that the equilibrium concentration of FeSCN2+ in...
A student made solution #3 using the experimental method in this
lab, and measured an absorbance of 0.559. The starting reagents are
2.00 x 10-3 M Fe(NO3)3 and 2.00 x
10-3 M KSCN.
The amount of absorption is proportional to the concentration
of
FeSCN2+. This relationship – true for many solutions – is called
“Beer’s Law”, and has the simple equation:
A = bc
where “A” is the absorption, “b” is 5174.6 for FeSCN2+ and “c”
is molarity
Make Five...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
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