# Voltaic Cell Research

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Swikriti Dasgupta HL IB Chemistry Determination of the Relationship Between Concentration and Rxn in Voltaic Cell: Research Question: How does the concentration of CuSO4 affect the voltaic cell as measured by voltmeter? Variables: Table 1: Independent Variable for Determining the Relationship Between Concentration and Rxn in Voltaic Cell: Independent Variable How it will be changed CuSO4 CuSO4 solution was diluted to 50% using distilled water. Then the diluted CuSO4 was further diluted to prepare 20%, 40%, 60%, 80%, and 100% dilution. Table 2: Dependent Variable for Determining the Relationship Between Concentration and Rxn in Voltaic Cell: Dependent Variable How it will be measured and why Voltage Using a volt meter Table 3:…show more content…
The concentrations are listed on table 4 below. Table 4: Concentration Ratios Concentration of CuSO4 (Moles) (±1.5) Ratio of CuSO4: distilled water (±1) 1.0000 20 ml of the previous concentration solution: 20 ml 0.5000 0.2500 0.1250 0.0625 Sample Calculations: Uncertainty for the concentration =Absolute uncertainty of water + absolute uncertainty of CuSO4 = 1+0.5 =1.5 Raw Data: Trials Trial 1 (±0.01) Trial 2 (±0.01) Trial 3 (±0.01) 1.000 M 1.11 1.12 1.12 0.500 M 1.10 1.10 1.11 0.250 M 1.05 1.06 1.08 0.125 M 1.02 1.03 1.01 0.625 M 0.98 0.98 0.99 Qualitative Data: Everyone in the room was using the same solutions so we ran out at the end so I did not have 40 ml to conduct my last experiment with the correct amount The wires needed to be replaced during my 3rd