What is the molar mass of FeSCN2+?
What is the molar mass of FeSCN2+?
114 g/mol
The molecular weight of FeSCN2+ is 114 g/mol.
How many moles are in FeSCN2+?
By spectroscopy and Beer’s Law, it is found that [FeSCN2+] at equilibrium is 1.50 x 10-4 M. The number of moles of FeSCN2+ present at equilibrium is found from the molarity and the volume of the solution (10.0 mL + 10.0 mL = 20.0 mL).
What is the molar absorptivity of FeSCN2+?
Frank and Oswalt report a molar absorptivity (ε) for FeSCN2+ of 4700L/(mol*cm). Remember that your pathlength (b) is 1 cm for the Spec-20.
What is the concentration of FeSCN2+?
The absorbance of this solution is measured, and the equilibrium FeSCN2+(aq) concentration is found to be 1.0 × 10 –3 M.
What is the chemical formula for thiocyanate?
CNS-
Thiocyanate
| PubChem CID | 9322 |
|---|---|
| Structure | Find Similar Structures |
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | CNS- |
| Synonyms | thiocyanate Thiocyanate ion Rhodanide Thiocyanate ion (1-) 302-04-5 More… |
How many moles are in Fe3+?
Ernest Z. The molar mass of Fe³⁺ is 55.845 g/mol. The only difference between an Fe atom and an Fe³⁺ ion is three electrons.
What is molar absorptivity units?
Molar absorptivity is arbitrarily defined for thickness measured in centimeters and concentration in moles/liter. Since A is a pure number, molar absorptivity has the units liters/mole cm.
How is molar absorptivity determined?
Divide the slope of the line by the path length (depth of the cuvette) to calculate molar absorptivity. Continuing our example: If 1.4 is the slope of the line and the path length is 0.5 cm, then the molar absorptivity is 1.4/0.5 = 2.8 L mol-1 cm-1.
What is the concentration of Fe3+?
approximately 0.1 M
The Fe3+ concentration was approximately 0.1 M in Part 3; the change in its concentration should have been negligible.
How do I calculate the concentration of a solution?
Divide the mass of the solute by the total volume of the solution. Write out the equation C = m/V, where m is the mass of the solute and V is the total volume of the solution. Plug in the values you found for the mass and volume, and divide them to find the concentration of your solution.
Is thiocyanate acidic or basic?
Thiocyanate (also known as rhodanide) is the anion [SCN]−. It is the conjugate base of thiocyanic acid. Common derivatives include the colourless salts potassium thiocyanate and sodium thiocyanate. Organic compounds containing the functional group SCN are also called thiocyanates.