Question

10) 0.0085 g of N3⁻ is dissolved in 1.3 L of water. Determine the concentration of N3⁻ ions in ppm if the density of the solution is 1.00 g/mL. Show work

A) 3.6 ppm B) 9.6 ppm C) 6.5 ppm D) 2.4 ppm E) 7.2 ppm

Answer 1

Q10) N 3- Ans. c) 6.5ppm is the correct concentration of ions in ppm. Calculation million (ppm) mass parts per x 106 of solute mass of solution g of solute (NSE 0.0085 Volume of solution = 1:32 = 1.3 x 103 mL Density of solution - = 1.00gr mass of solution = Volume & Density = (1.3X103 x 100) golul 3 103 x 10 gi :. ppm = 0.0085 6 X 10 6.5 ppm 1•3x103