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Do a log-log of your sample values (y-axis; e.g., sorption levels), and plot that against the x-axis (e.g., concentration in solution). This will linearize your model so that you can get a regression equation (excel will do this). Use this equation to find the y-intercept. The inverse log-log of your y-intercept gives you your Kf.
for more help see:
Wong JPK, Wong YS, Tam NFY. 2000. Nickel Biosorption by Two Chlorella Species, C. Vulgaris (a Commercial Algae) and C. Miniata (a Local Isolate). Bioresource Technology. 73:133-137
What else can I help you with?
How do you calculate the boiling point elevation of a solution?
To calculate the boiling point elevation of a solution, you can use the formula: Tb i Kf m. Tb is the boiling point elevation, i is the van't Hoff factor, Kf is the cryoscopic constant, and m is the molality of the solution.
How do you calculate the van't Hoff factor from the freezing point?
To calculate the van't Hoff factor from the freezing point, you can use the formula: i Tf / Kf. Here, i represents the van't Hoff factor, Tf is the freezing point depression, and Kf is the cryoscopic constant. By plugging in the values for Tf and Kf, you can determine the van't Hoff factor.
In a reaction the equilibrium constant for the forward reaction is Kf and the equilibrium constant of the backward reaction is KB What is the relationship between Kf and KB?
The relationship between Kf and KB is that they are reciprocals of each other. Mathematically, Kf = 1/KB. This means that if Kf is large, then KB will be small and vice versa.
How do you calculate the molality from the freezing point?
To calculate molality from the freezing point, you can use the formula: molality (Kf Tf) / molar mass of solute. Here, Kf is the freezing point depression constant, Tf is the change in freezing point, and the molar mass of the solute is the mass of the solute in one mole.
How much would the freezing point decrease if a 3.23 molal solution were achieved?
The freezing point depression of a solution is given by the equation ΔTf = Kf * m, where ΔTf is the freezing point depression, Kf is the cryoscopic constant, and m is the molality of the solution. With the molality (m) of 3.23 molal and the cryoscopic constant for water (Kf) being approximately 1.86 ºC kg/mol, you can calculate the freezing point depression.
How do you calculate the boiling point elevation of a solution?
To calculate the boiling point elevation of a solution, you can use the formula: Tb i Kf m. Tb is the boiling point elevation, i is the van't Hoff factor, Kf is the cryoscopic constant, and m is the molality of the solution.
How do you calculate the van't Hoff factor from the freezing point?
To calculate the van't Hoff factor from the freezing point, you can use the formula: i Tf / Kf. Here, i represents the van't Hoff factor, Tf is the freezing point depression, and Kf is the cryoscopic constant. By plugging in the values for Tf and Kf, you can determine the van't Hoff factor.
In a reaction the equilibrium constant for the forward reaction is Kf and the equilibrium constant of the backward reaction is KB What is the relationship between Kf and KB?
The relationship between Kf and KB is that they are reciprocals of each other. Mathematically, Kf = 1/KB. This means that if Kf is large, then KB will be small and vice versa.
How do you calculate the molality from the freezing point?
To calculate molality from the freezing point, you can use the formula: molality (Kf Tf) / molar mass of solute. Here, Kf is the freezing point depression constant, Tf is the change in freezing point, and the molar mass of the solute is the mass of the solute in one mole.
How much would the freezing point decrease if a 3.23 molal solution were achieved?
The freezing point depression of a solution is given by the equation ΔTf = Kf * m, where ΔTf is the freezing point depression, Kf is the cryoscopic constant, and m is the molality of the solution. With the molality (m) of 3.23 molal and the cryoscopic constant for water (Kf) being approximately 1.86 ºC kg/mol, you can calculate the freezing point depression.
What is the difference between the equilibrium constant Kf and the solubility product constant Ksp in a chemical reaction?
The equilibrium constant Kf measures the extent of a reaction at equilibrium, while the solubility product constant Ksp measures the extent of a substance dissolving in a solution.
What are the freezing point depression equations used to calculate the change in freezing point of a solution?
The freezing point depression equation is Tf i Kf m, where Tf is the change in freezing point, i is the van't Hoff factor, Kf is the cryoscopic constant, and m is the molality of the solution.
How can one calculate freezing point depression in a solution?
To calculate freezing point depression in a solution, you can use the formula: Tf i Kf m. Tf represents the freezing point depression, i is the van't Hoff factor, Kf is the cryoscopic constant, and m is the molality of the solution. By plugging in these values, you can determine the freezing point depression of the solution.
What is the Kf of ethylene glycol?
The freezing point depression constant (Kf) of ethylene glycol is 1.86°C/m.
What is the cryoscopic constant Kf for formic acid?
2.38 K.kg.mol-1
How can the Kf value of a solvent can be determined?
The Kf value of a solvent can be determined experimentally by measuring its freezing point depression when a known amount of solute is added. The formula used is ΔTf = Kf * m, where ΔTf is the depression in freezing point, Kf is the cryoscopic constant for the solvent, and m is the molality of the solution. By rearranging this formula, Kf can be calculated by Kf = ΔTf / m.
Calculate the freezing point what solutions assuming complete dissociation?
The freezing point of a solution can be calculated using the formula: ΔTf = i * Kf * m, where ΔTf is the freezing point depression, i is the Van't Hoff factor (for complete dissociation i = number of ions after dissociation), Kf is the cryoscopic constant, and m is the molality of the solution.
