A holding tank with capacity 5000 liters initially contains 1500 liters of 25 mM NaCl solution. a) What is the final concentration of NaCl (expressed in mM) if an additional 3000 liters of 25 mM NaCI solution is pumped into the tank? b) Instead of (a), if 3000 liters of water are added to the tank, what is the final concentration of NaCI (expressed in mM)? c) Instead of (a) or (b), if an additional 500 liters of 25 mM NaCl solution plus 3000 liters of water are added, what is the final concentration of NaCl: Expressed as molarity? Expressed as % w/v? (% w/v means grams per 100 mL of solution, you result will be expressed as % w/v, example 3.4 % w/v) Expressed as g/cm3? Expressed as ppm? (ppm means g per 10° g of solution- see Section 2.4.5 from our textbook) You can assume that the density of the solution (NaCl + water) is the same as the density of water - this assumption is appropriate since this is a dilute solution. Assume density of water to be 1 g/cm³. i. ii. iii. iv.

A holding tank with capacity 5000 liters initially contains 1500 liters of 25 mM NaCl solution. a) What is the final concentration of NaCl (expressed in mM) if an additional 3000 liters of 25 mM NaCI solution is pumped into the tank? b) Instead of (a), if 3000 liters of water are added to the tank, what is the final concentration of NaCI (expressed in mM)? c) Instead of (a) or (b), if an additional 500 liters of 25 mM NaCl solution plus 3000 liters of water are added, what is the final concentration of NaCl: Expressed as molarity? Expressed as % w/v? (% w/v means grams per 100 mL of solution, you result will be expressed as % w/v, example 3.4 % w/v) Expressed as g/cm3? Expressed as ppm? (ppm means g per 10° g of solution- see Section 2.4.5 from our textbook) You can assume that the density of the solution (NaCl + water) is the same as the density of water - this assumption is appropriate since this is a dilute solution. Assume density of water to be 1 g/cm³. i. ii. iii. iv.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 49RGQ: Fluoridation of city water supplies has been practiced in the United States for several decades. It...

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