(4 أل containing The density of concentrated ammonia, which is 28.0% w/w NH3, is 0.899 g/mL. What volume of this reagent should be diluted to 1.0 x10³ mL to make a solution that is 0.036 M in NH3? nous solution contains 45.1 mg of a pesticide. Express the

(4 أل containing The density of concentrated ammonia, which is 28.0% w/w NH3, is 0.899 g/mL. What volume of this reagent should be diluted to 1.0 x10³ mL to make a solution that is 0.036 M in NH3? nous solution contains 45.1 mg of a pesticide. Express the

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Homework
1) A solution of 0.10 M SO4 is available. What is the normality of this solution
when used in the following reactions?
a- Pb²+ (aq) + SO4²- (aq)
b. HCl(aq) + SO4² (aq).
← PbSO4(s)
→HSO4 (aq) + Cl(aq)
H₂SO3(aq) + 5H₂O(1)
c. SO42- + 4H3O*(aq) + 2e →
2) The concentration of lead in an industrial waste stream is 0.28 ppm. What is
its molar concentration?
3) Commercially available concentrated hydrochloric acid is 37.0% w/w HCl. Its
density is 1.18 g/mL. Using this information calculate (a) the molarity of
concentrated HCl, and (b) the mass and volume (in milliliters) of solution
containing 0.315 mol of HCl.
4 The density of concentrated ammonia, which is 28.0% w/w NH3, is 0.899
g/mL. What volume of this reagent should be diluted to 1.0 x10³ mL to make
a solution that is 0.036 M in NH3?
5) A 250.0-mL aqueous solution contains 45.1 mg of a pesticide. Express the
pesticide's concentration in weight percent, parts per million, and parts per
billion.
6.92x10-
6) What is the pH of a solution for which the concentration of H* is
6M? What is the [H*] in a solution whose pH is 8.923?
7) Calculate the molarity of a potassium dichromate solution prepared by
placing 9.67 g of K₂Cr₂O7 in a 100-mL volumetric flask, dissolving, and
diluting to the calibration mark.
8) For each of the following, explain how you would prepare 1.0 L of a solution
that is 0.10 M in K+. Repeat for concentrations of 1.0 x 102 ppm K and 1.0%
w/v Kt.
a. KCI
b. K₂SO4
c. K3Fe(CN)6

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