mikyragenius mikyragenius

04-11-2022
Chemistry

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A calibration plot for a set of serial dilutions of copper(II) sulfate pentahydrate (CuSO45 H2O) was used to calculate a linear trendline of y = 1.578x + 0.325. Absorbance was plotted on the y-axis and concentration in M on the x-axis.

1. An unknown solution had an absorbance of 0.675. Determine the concentration of this solution, in M.

2. Copper(II) sulfate pentahydrate has a molar mass of 249.68 g/mol. The density of the solution was 1.31 g/mL. Convert your answer in (1) to mass percent.

3. Convert your answer in (2) to grams CuSO45 H2O per 100 grams of water.

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