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The results of analysis of a set of standard cadmium solutions are presented in the table - HSC - SSCE Chemistry - Question 28 - 2003 - Paper 1
Question 28
The results of analysis of a set of standard cadmium solutions are presented in the table. | Concentration of cadmium standard solution (ppm) | Absorbance | |------... show full transcript
Worked Solution & Example Answer:The results of analysis of a set of standard cadmium solutions are presented in the table - HSC - SSCE Chemistry - Question 28 - 2003 - Paper 1
Step 1
Draw an appropriate graph of the data.
Answer
To graph the data presented, follow these steps:
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Label the Axes: On the x-axis, label it as 'Concentration of cadmium (ppm)' with values ranging from 0 to 12. On the y-axis, label it as 'Absorbance' with values ranging from 0.00 to 1.00.
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Plot the Points: Using the data from the table, plot the following points on the graph:
- (0, 0.00)
- (3, 0.22)
- (6, 0.38)
- (9, 0.62)
- (12, 0.83)
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Draw the Best Fit Line: Once all points are plotted, draw a line of best fit that accurately represents the trend shown by the data. The line should start at the origin (0,0) and rise through the plotted points, showing a positive correlation between concentration and absorbance.