26.07.2021 Views

General Chemistry Principles, Patterns, and Applications, 2011

General Chemistry Principles, Patterns, and Applications, 2011

General Chemistry Principles, Patterns, and Applications, 2011

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

8.<br />

9.<br />

a. 14.6 M<br />

b. X = 0.510<br />

c. 57.7 m<br />

10.<br />

11.<br />

a. 14.8 M<br />

b. X = 0.292<br />

12.<br />

13. The molarity is 0.745 M, <strong>and</strong> the mole fraction is 0.0134.<br />

14.<br />

15. The molarity is 0.0129 M, the molality is 0.0129 m, the mole fraction is 2.33 × 10 −4 , <strong>and</strong> the solution contains<br />

1830 ppm Na 2 HPO 4 . Mole fraction is most useful for calculating vapor pressure, because Raoult’s law states<br />

that the vapor pressure of a solution containing a non-volatile solute is equal to the mole fraction of solvent<br />

times the vapor pressure of the pure solvent. The mole fraction of the solvent is just one minus the mole<br />

fraction of solute.<br />

16.<br />

17. 6.65 × 10 −5 mol sodium; 6.14 × 10 4 ppb<br />

18.<br />

19. 1.63 × 10 −3 g; 2.17 × 10 4 ppb<br />

20.<br />

21. 2.22 × 10 4 mL or 22.2 L<br />

22.<br />

23. 4.68 M HCl<br />

24.<br />

25. 0.777 g BaSO 4; Na 2 SO 4; 0.0134 M Na 2 SO 4<br />

13.4 Effects of Temperature <strong>and</strong> Pressure on Solubility<br />

LEARNING OBJECTIVE<br />

Saylor URL: http://www.saylor.org/books<br />

Saylor.org<br />

1213

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!