Calculating Ksp: A Temperature-Dependent Approach

Thread starter elitespart
Start date Feb 25, 2009
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Delta Ksp

In summary, to calculate Ksp from Delta H, the Gibbs-Helmholtz equation (Ksp = e^(-(ΔH/R*T))) must be used, where ΔH is the change in enthalpy, R is the gas constant, and T is the temperature in Kelvin. This allows us to determine the solubility product constant (Ksp) of a substance at a specific temperature, which is important in understanding its solubility behavior and predicting the formation of precipitates. Ksp and Delta H are directly proportional, meaning that as ΔH increases, Ksp also increases. However, Ksp can only be calculated at a specific temperature, as the values of R and T must be known. The accuracy

Feb 25, 2009

elitespart

Is it possible to calculate Ksp at a certain temperature if you know Ksp at a different temperature and [tex]\Delta H[/tex]?

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Feb 26, 2009

alxm

Science Advisor

Yes, it's possible.

Feb 26, 2009

elitespart

But you'd need to get delta S first right?

EDIT: nvm, got it.

Last edited: Feb 26, 2009

1. How do you calculate Ksp from Delta H?

To calculate Ksp from Delta H, you need to use the Gibbs-Helmholtz equation, which is given by Ksp = e^(-(ΔH/R*T)), where ΔH is the change in enthalpy, R is the gas constant, and T is the temperature in Kelvin.

2. What is the significance of calculating Ksp from Delta H?

Calculating Ksp from Delta H allows us to determine the solubility product constant (Ksp) of a substance at a specific temperature. This is important in understanding the solubility behavior of a substance in a solution and can also be used to predict the formation of precipitates.

3. What is the relationship between Ksp and Delta H?

Ksp and Delta H are related through the Gibbs-Helmholtz equation. Ksp is directly proportional to e^(-ΔH/R*T), which means that as ΔH increases, Ksp also increases.

4. Can you calculate Ksp from Delta H at any temperature?

No, you can only calculate Ksp from Delta H at a specific temperature. This is because the value of the gas constant (R) and the temperature (T) must be known to use the Gibbs-Helmholtz equation.

5. How accurate is calculating Ksp from Delta H?

The accuracy of calculating Ksp from Delta H depends on the accuracy of the values used for ΔH, R, and T. Additionally, experimental errors and uncertainties can also affect the accuracy of the calculated Ksp value.