0.000333 g fluorescein is dissolved in 225 mL solution of ethanol. The molar mas

Question

0.000333 g fluorescein is dissolved in 225 mL solution of ethanol. The molar mass of fluorescein is 332.32 g/mol and the density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity? What is the concentration of the solution in ppm?

Map Sapling Learning macmillan learning this question was written by Faculty and Staff at University of California, Irvine 0.000333 g fluorescein is dissolved in 225 mL solution of ethanol. The molar mass of fluorescein is 332.32 g/mol and the density of ethanol is 0.785 g/mL What is the concentration of the solution in molarity? Number M fluorescein What is the concentration of the solution in ppm? Number ppm fluorescein

Explanation / Answer

molarity    = weight of solute *1000/gram molar mass * volume of solution in ml

                 = 0.000333*1000/332.32*225

                  = 4.45*10-6 M

         10-6 M = 0.0355PPm

4.45*10-6 mole/L * 332.32g/mole = 0.001478g/L

                      =0.001478*1000mg/L                  [1g = 1000mg]

                      = 1.478mg/L

                       1.478ppm                               [ 1mg/L = 1ppm]

    

Related Questions

Navigate

• Browse (All)
• Browse
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.