#6 for each temperature calculate 1/T ( in units of kelvins^-1) Ksp, and in ln K
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Question
#6 for each temperature calculate 1/T ( in units of kelvins^-1) Ksp, and in ln Ksp 22. Using the titration methods you learned in LAB TO, lulaie endpoint (blue to yellow color transition). You might have to refill the burette with addition HCI. For each titration, be sure to record the initial and final volume readings on the burette. When finished with the titrations, dispose of the excess HCl solution as indicated by your lab instructor and 23. clean the burette. Data Collection 1. Termperature of the borax solutions at the point of removal from the flask: 2. Titration data: 0 Trial 3 Trial 4 Trial 1 Trial 2 Final burette reading (ml.) Initial burette reading (ml) Volume HCI added to borax solution (mL.) Endpoint color 22-5 Laboratory 22 Thermodynamics of Formation of a Borax Solution 283Explanation / Answer
Solubility product (equilibrium) constant, Ksp, is:
Ksp = [Na+ ] 2 [B4O5(OH)42- ]
Note that two sodium ions are produced for each borate ion in the reaction.
Therefore, [Na+ ] = 2 [B4O5(OH)42- ]
Ksp = 4 [B4O5(OH)42- ] 3
temperature T (K) [borate] Ksp lnKsp 0.1 273.25 0.0289 9.65503E-05 -9.24545 20 293.15 0.184 0.024918016 -3.69216 35 308.15 0.2501 0.06257503 -2.77139 45.9 319.05 0.0751 0.001694259 -6.38051 60 333.15 31.0111 119292.051 11.68933Related Questions
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