A 4.55 L sample of water contains 0.115 g of sodium ions.Determine the concentration of sodium ions in ppm if the density of the solution is 1.00 g/mL.
A)52.3 ppm
B)13.2 ppm
C)12.7 ppm
D)25.3 ppm
E)36.5 ppm

Question

Quizplus · Accepted Answer

First, we need to calculate the total mass of the solution:

mass = volume x density = 4.55 L x 1.00 g/mL = 4.55 kg

Next, we can use the mass of sodium ions and the total mass to calculate the concentration in parts per million (ppm):

concentration (ppm) = (mass of solute / mass of solution) x 10^6

concentration (ppm) = (0.115 g / 4.55 kg) x 10^6 = 25.27 ppm

Rounding this to one decimal place gives us an answer of 25.3 ppm, which is closest to answer choice D.

A 455 L Sample of Water Contains 0