Name: Michelle BangQuiz Section: AGID Number: 1021913Lab Partner: Tessa BarclayTotal Points = 60 (5 notebook, 55 template)PURPOSE AND METHODDATA AND CALCULATIONS A. Flame emission determination of [K+] in the 0.50 M KCl + KHP (sat) solutionPreparation of StandardsDATA50 mL of each standard solution (from prelab)SolutionIntensityStandard[K+], (M)mL of stock Standard 10.0000758617.50 E-50.75Standard 20.0001515721.50 E-41.50Standard 30.00022523332.25 E-42.25Standard 40.000330843.00 E-43.00Standard 50.00037537553.75 E-43.75Intensity24.43453 ptsslope972000y-intercept13.1Dilution factor24.43.414E-042,5000.0103 ptsB. Standardization of NaOHRun 1Run 2Run 3**Mass of KHP, g0.1290.130.13moles KHP0.000630.000640.00064Initial buret reading, mL0.030.010Final buret reading, mL6.246.706.23mL NaOH titrated6.216.696.23L NaOH titrated0.006210.006690.00623[NaOH], moles/L0.1010.0960.103Average, [NaOH]0.099 M3 ptsC. Titrations of KHP Samples with and without KClmL of KHP(aq) used in titrations1.00 mLDO NOT enter the data for the solution with KCl in this tableTemperature, K1/T (in K)0.0273.150.052.452.400.2400.2400.05760.00366-2.85424.4297.550.054.704.650.4650.4650.2160.00336-1.53236.6309.750.017.487.470.7470.7470.5580.00323-0.58344.4317.550.008.978.970.8970.8970.8050.00315-0.21757.4330.550.0311.9411.911.1901.1901.4160.003030.34865.4338.550.0513.4913.441.3431.3431.8040.002950.5903 ptsslope-5036 KR8.315y-intercept15.55341.87 kJ/mol129.315 J/mol24.40.054.704.650.4650.465autofills from Table 524.40.0254.674.6450.4640.46424.40.0254.404.3750.4370.437Average M0.455mL of KHP(aq) used in titrations1.00 mL2 pts0.207(from Table 5 and two more replicates)24.40.007.577.570.7570.25224.40.007.777.770.7770.25924.40.017.957.940.7940.265Average M:0.259mL of KHP(aq) in KCl used in titrations3.00 mL2 pts0.2214 ptsRESULTS AND DISCUSSION 2 pts2. Based on your results at room temperature, what is the solubility of KHP in g/L 3 pts4 pts4 pts3 ptsHow do your results compare (calculate and comment on % difference)? 2 ptsTable 1: Volume of 5.00x10-3M needed to make Table 2: Flame Photometer Data[K+], (M)Temperature,oCKHP(sat) in 0.50 M KClM-1Table 3: Flame Emission Determination of [K+] in the original sampleTemperature, oC[K+] in Measured Solution (M)[K+] in Original Solution (M)Table 4: NaOH Standardization Table 5: Titration Data and CalculationsTemperature, oCInitial buret reading (mL)Final buret reading (mL)mL NaOH addedmmoles HP-(=mmoles NaOH) Molarity HP-Kspln(Ksp)J/mol*K∆HoSoln∆SoSolnTable 6: Titration of RT (no KCl) solution with NaOH(aq) to determine [HP-]Temperature, oCInitial buret reading (mL)Final buret reading (mL)mL NaOH titrated
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