Ask Question
25 June, 08:09

Suppose the average concentration of copper in water is measured to be 2.5 x 10" M. a. Express this concentration in mg/L. b. Express this concentration in ug/L. c. Does this concentration of copper exceed the freshwater acute criteria maximum concentration of 65 ppb?

+2
Answers (1)
  1. 25 June, 10:12
    0
    a) C Cu = 1588.6 mg/L

    b) C Cu = 1588600 μg/L

    c) this concentration exceeds the acute freshwater criteria:

    ∴ C Cu = 1588.6 mg/L >> 0.065 mg/L

    Explanation:

    ∴ C Cu = 2.5 E-2 mol/L

    ∴Mw Cu = 63.546 g/mol

    a) C Cu = 2.5 E-2 mol/L * 63.546 g/mol = 1.5886 g/L

    ⇒ C Cu = 1.5886 g/L * (1000 mg/g) = 1588,6 mg/L

    b) C Cu = 1588.6 mg/L * (μg / 0.001 mg) = 1588600 μg/L

    c) C Cu = 65 ppb * (ppm / 1000ppb) = 0.065 ppm = 0.065 mg/L

    ∴ ppm ≡ mg/L

    ⇒ C Cu = 1588.6 mg/L >> 0.065 mg/L; this concentration exceeds the acute freshwater criteria
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Suppose the average concentration of copper in water is measured to be 2.5 x 10" M. a. Express this concentration in mg/L. b. Express this ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers