You weighed a solid sample of an unknown mixture of carbonateand bicarbonate to be 5.3431 grams. You properly dissolved theentire unknown solid sample in 250.0 mL of boiled and cooleddistilled water. You then performed two trials of 25.00 mL aliquotof the unknown solution titrated with 0.1389 M standardized HClusing a pH probe yielding: trial 1:{volume HCl (mL), pH} = {{1.090,12.15}, {9.190, 12.13}, {17.290, 12.33}, {25.590, 12.35}, {33.800,12.13}, {41.830, 12.30}, {49.990, 11.34}, {58.280, 7.10}, {66.500,3.21}, {74.580, 2.57}, {82.760, 2.50}, {91.030, 2.53}, {99.070,2.45}, {107.360, 2.52}}, and trial 2: {volume HCl (mL), pH} ={{0.900, 10.37}, {9.220, 10.49}, {17.320, 10.34}, {25.530, 10.35},{33.720, 10.39}, {41.980, 10.22}, {49.990, 9.46}, {58.240, 5.32},{66.460, 1.81}, {74.680, 1.22}, {82.880, 1.19}, {90.990, 1.18},{99.210, 1.19}, {107.320, 1.16}}. Then you got really crazy anddecided to do two more trials by adding 50.00mL of 0.1301 Mstandardized NaOH and then excess barium chloride to precipitateall remaining carbonate. The excess hydroxide was titrated for eachtrial with the above standardized HCl solution using a conductivityprobe yielding: trial 1: {volume HCl (mL), Conductivity (µS/mL)} ={{0.00, 289814}, {2.41, 283202}, {4.80, 271022}, {7.14, 255543},{9.51, 236964}, {12.00, 214753}, {14.36, 191397}, {16.80, 165119},{19.18, 137574}, {21.25, 112148}, {23.74, 79875}, {26.08, 47950},{29.29, 5151}, {31.65, 5545}, {34.15, 4567}, {36.37, 2537}, {39.18,-1542}, {41.28, -5658}, {43.89, -12009}, {46.47, -19593}, {48.56,-26663}, {50.92, -35621}, {53.77, -47776}, {55.98, -58194}}, andtrial 2: {volume HCl (mL), Conductivity (µS/mL)} = {{0.00, 269987},{2.40, 264037}, {4.74, 253103}, {7.10, 238729}, {9.49, 221376},{11.97, 200831}, {14.26, 179800}, {16.84, 153956}, {19.11, 129476},{21.33, 104058}, {24.00, 71650}, {26.36, 41437}, {29.73, 8778},{32.19, 21978}, {34.43, 33118}, {36.76, 43848}, {39.29, 54540},{41.43, 62828}, {43.77, 71118}, {46.62, 80163}, {48.12, 84472},{50.81, 91424}, {53.45, 97325}, {56.20, 102500}}.
Calculate the average percent weights of the bicarbonate andcarbonate in the original sample.
