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Experiment 20pH Titration of Cola DrinksOctober 27th, 2017 CHEM 1212KSection B05TA: Iramofu DominicHonor Pledge – Freshman Chemistry LaboratoriesI did not copy any portion of this work from the work of other students,old lab reports, or unreferenced materials. I understand that such activityis a violation of the Georgia Tech Honor Code.______________________________________SignatureData and Results
A. Standardization of NaOHTable 1. Standardization of NaOHTrialMass KHP(g)Volume NaOH Solution(mL)[NaOH] (mol/L)10.06531.000.01027820.06733.500.009804Mean [NaOH] (mol/L)0.010041B. Titration of Cola SampleTable 2. Initial Parameters of TitrationVolume of Cola (mL)20Initial pH2.31Table 3. Data for Titration of ColaVolume oftitrant (mL)pHDpHDV (ml)DpH/DVAvg. V oftitrant (mL)0.002.310.041.000.041.002.350.051.000.050.502.002.400.051.000.051.503.002.450.051.000.052.504.002.500.051.000.053.505.002.550.081.000.084.506.002.630.081.000.085.507.002.710.101.000.106.508.002.810.071.000.077.509.002.880.713.000.248.5012.003.590.461.000.4610.5013.004.050.681.000.6812.5014.004.730.641.000.6413.5015.005.370.501.000.5014.5016.005.870.301.000.3015.5017.006.170.081.000.0816.5018.006.250.091.000.0917.5019.006.340.121.000.1218.5020.006.460.060.500.1219.5020.506.520.141.000.1420.2521.506.660.030.500.0621.0022.006.690.050.500.1021.7522.506.740.141.000.1422.2523.506.880.090.500.1823.0024.006.970.041.000.0423.7525.007.010.041.000.0424.5026.007.050.161.000.1625.5027.007.210.060.500.1226.5027.507.270.041.000.0427.2528.507.310.120.500.2428.0029.007.430.120.500.2428.7529.507.550.070.500.1429.25
30.007.620.160.500.3229.7530.507.780.151.000.1530.2531.507.930.110.500.2231.0032.008.040.080.500.1631.7532.508.120.210.500.4232.2533.008.330.170.500.3432.7533.508.500.180.500.3633.2534.008.680.301.000.3033.7535.008.980.120.500.2434.5035.509.100.140.500.2835.2536.009.240.060.500.1235.7536.509.300.141.000.1436.2537.509.440.080.500.1637.0038.009.520.071.000.0737.7539.009.590.040.500.0838.5039.509.630.061.000.0639.2540.509.690.052.000.0340.0042.509.740.041.000.0441.5043.509.780.072.000.0443.0045.509.850.071.000.0744.5046.509.920.000.000.0046.00[H3PO4] in Original Cola Sample (mol/L)1.60E-02Plot 1: Titration Curve with Approximate First Derivative0.005.0010.0015.0020.0025.0030.0035.0040.0045.0050.000.002.004.006.008.0010.0012.000.000.100.200.300.400.500.600.700.80Average Volume of Titrant (ml)pHDelta pH/Delta VTable 4. Determination of KaValuesKGraphical AnalysisLiterature ValuesV1/2(mL)pKaKapKaKaKa16.252.632.34E-032.157.08E-03