The World Health Organization Recommends That the Maximum Allowable Concentration

question 114

Multiple Choice

The World Health Organization recommends that the maximum allowable concentration of chromium(VI) in drinking water be limited to 0.05 mg/L. If the molar absorptivity of chromium(VI) at 345 nm is 1.5 10³/(M cm) , what is the absorbance of a solution that contains 0.050 mg/L in a 10-cm-long cell?

• A)0.0014
• B)0.75
• C)0.014
• D)0.075
• E)14

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