Chemical Thermodynamics Experiment 1: Heat of Solution of Oxalic Acid

Questions and Answers

Temperature and pressure

By the saturation concentration

Vant Hoff's equation

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Bunsen burner Signup and view all the answers

Logarithm of solubility Signup and view all the answers

Saturation concentration Signup and view all the answers

It increases solubility. Signup and view all the answers

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Study Notes

Solubility of a substance depends on its intrinsic properties and the solvent used.
The extent of solubility is measured by the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature.

The van 't Hoff equation relates the change in temperature to the enthalpy change (ΔH) for the process: ΔH = R * lnKeq / (1/T1 - 1/T2).
The equation indicates that a change in temperature affects the equilibrium constant (Keq) and subsequently the solubility of a substance.

ln 𝑆 represents the natural logarithm of the solubility (𝑆) in Vant Hoff's equation.
'S' in Vant Hoff's equation stands for solubility.

Temperature plays a significant role in determining solubility, as a change in temperature can alter the solubility of a substance.

Labeling beakers is important to avoid contamination and ensure accurate results in the experimental procedure for determining the heat of solution.
The equipment used in the experimental procedure includes a polystyrene calorimeter, a thermometer, and a stirrer, among others. The equipment NOT mentioned is a burette.