Solving Tds Equation: Unit Conversion for KJ/Kg

In summary, the conversation involves rearranging and using an integral to solve for enthalpy in the Tds equation, with the goal of converting from kilopascals to kilojoules per kilogram. The question is how to add the two different units, and the suggestion is to check for mistakes in the approach since all units should be homogeneous.
  • #1
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Homework Statement


Tds equation

Homework Equations


Tds=dh-vdP


The Attempt at a Solution


i had to rearrange and use an integral for vdP to solve for enthalpy so I had the change in enthalpy is equal to the change in ehtropy multiplied by temprature plus a number in kPa from the integral.
Question is how do I add the number in Kilopascals to the number in Kilojoules/hilogram. I need a unit conversion of some sort cause the answer needs tobe in KJ/Kg
 
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  • #2
how about posting your attempt so that we can see your approach. More than likely you made a mistake since all units should be homogeneous.
 

FAQ: Solving Tds Equation: Unit Conversion for KJ/Kg

What is the Tds equation and why is it important?

The Tds equation is a thermodynamic equation used to calculate the total dissolved solids (TDS) in a solution. It is important because TDS can have significant impacts on water quality and can affect various industrial processes and human health.

What is the unit conversion for kJ/kg in the Tds equation?

The unit conversion for kJ/kg in the Tds equation is used to convert the energy per unit mass of a substance, which is measured in joules per kilogram (kJ/kg), to the concentration of TDS, which is measured in parts per million (ppm).

How do you solve the Tds equation for unit conversion?

To solve the Tds equation for unit conversion, you need to first determine the energy per unit mass of the substance in kJ/kg. Then, you can use the formula TDS = (kJ/kg) x (1,000,000/18) to calculate the concentration of TDS in parts per million (ppm).

What factors can affect the accuracy of the Tds equation and its unit conversion?

The accuracy of the Tds equation and its unit conversion can be affected by various factors such as temperature, pressure, and the presence of other dissolved substances in the solution. It is important to take these factors into account when using the Tds equation to ensure accurate results.

Can the Tds equation and its unit conversion be applied to all types of solutions?

The Tds equation and its unit conversion can be applied to most aqueous solutions, as long as the solution is at a constant temperature and pressure. However, it may not be accurate for solutions that contain a high concentration of non-dissolved solids or gases.

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