EXSET_6 - Swieter; p1 of 3 CHM1040 Question Set #6...

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Swieter; p1 of 3 X:\~Natsci\ADJUNCT\bhaskar\pdf\1041\EXSET#6.DOC CHM1040 Question Set #6 QUESTIONS INVOLVING SOLUTIONS 1. In which physical state (solid, liquid, or gas) is it easiest to carry out chemical reactions? Explain. 2. What is the definition of the word “solution?” 3. What are the components of a solution? How are they distinguished? 4. Why are most chemical reactions carried out in liquid solution? 5. Generally, what is the most “convenient” concentration unit for chemists to use? Why? 6. What is the definition of “Molarity?” 7. What is the molarity of sugar, C 12 H 22 O 11 , if 53.5 g of sugar are dissolved to give 746 mL of solution? 8. What is the molarity of KCl if 1.45 g of KCl are dissolved to give 50.0 mL of solution? 9. How many grams of NaNO 3 are there in 75.0 mL of 1.00 M NaNO 3 solution? 10. Discuss an experimental method to determine whether or not a compound is molecular or ionic. 11. Consider the formulas: HOH, NaOH, HCl, NaCl. Which are predicted to be molecular materials? Which are expected to be ionic materials? Explain. 12. What is unusual about the composition of salts such as NH 4 Cl or (NH 4 ) 2 SO 4 ? 13. For solutions, what are electrolytes? What are nonelectrolytes? 14. What is necessary for a substance to conduct electricity? Explain. 15. Why does solid NaCl not conduct electricity but an aqueous solution of NaCl does? 16. Give all possible ways one can get ions into solution. Explain! 17. If a solute is known to be a nonelectrolyte in solution, what, if anything, can one infer about the type of bonding in the pure solute? 18. If a solute is known to be an electrolyte in solution, what, if anything, can one infer about the type of
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EXSET_6 - Swieter; p1 of 3 CHM1040 Question Set #6...

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