Concentration of sodium chloride ions in a solutionPredictionIf I double the concentration of sodium chloride ions in a solution, the current that can flow in the circuit will also double. Controlled variables* Temperature: ambient temperature -15ºc* Voltage: 6V* Water volume: 200cm³* Equipment: see diagramDiagram=======How to do the concentration* 0.5M = 5.85g in 200cm³* 1M = 17g in 200cm³* 1.5M = 22.85g in 200cm³* 2M = 34g in 200cm³* 2.5M = 39.85g in 200cm³Method======* Install all equipment* Turn on the circuit* Note the first current observed * Turn off the circuit.Results==== ===Use different equipmentUse the same equipmentConcentration (m)Current (A)Current (A)0.50.441.9211.931.731.51.982.0722.222.412.51.162.55AnalysisI found that the results follow a trend. The tendency is for the points on the graph to form a straight line, which curves towards the upper right corner of the graph. The last point on my chart was lower than expected, which is why the line curves toward the end of the chart. I also found that as the concentration increases, the current increases. I drew two best fit lines on my graph, because the first line I drew didn't go through all the points but it did go through (0,0). while the second line passed directly through three points, which were points two, three and four. The reason why the first line is best suited