The concentration of chloride ion in a solution that contains 35.0 ppm chloride is % by mass. A) 3.50 × 10¹ B) 3.50 × 10^-³ C) 3.50 × 10^-⁶ D) 3.50 × 10² E) 3.50 × 10^-²

Question

Quizplus · Accepted Answer

First, we need to convert the concentration from parts per million (ppm) to percentage by mass:

35.0 ppm = 35.0 mg/L
35.0 mg/L = 35.0 g/m3 (assuming density of 1 g/mL)
35.0 g/m3 = 0.0035% by mass

So the concentration of chloride ion in the solution is 0.0035% by mass.

Choice B is the only option that includes 0.0035%, so it is the correct answer.

The Concentration of Chloride Ion in a Solution That Contains