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Che 107 Quiz 4 S06
Course: CHE 4056, Fall 2009School: Jefferson Community and...
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2005/06 Spring CHE 107 + 10 points Quiz 4 Name: ____________________________ Section: 5701 Directions: Answer the following questions completely. For multiple choice questions, choose the one best answer. If it is a calculation, be sure to show all your work (including units) for full credit. If you show no work, you will receive zero points. There are 16 available points. 1. Answer the following questions...
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2005/06 Spring CHE 107
+ 10 points
Quiz 4
Name: ____________________________ Section: 5701
Directions: Answer the following questions completely. For multiple choice questions, choose the one best answer. If it is a calculation, be sure to show all your work (including units) for full credit. If you show no work, you will receive zero points. There are 16 available points. 1. Answer the following questions based on the chemicals listed below. H2SO4 NH3 HNO3 Al(OH)3 KOH FeCl3
a. (0.6 points) Circle all of the strong acids and strong bases in the above list. b. (1.6 points) Now, decide which compounds fit the definitions below. List all that apply on each line. i. Arrhenius acids: iv. Brnsted-Lowry bases: ii. Arrhenius bases: iii. Brnsted -Lowry acids: c. (0.4 points) Which of the compounds are... i. polyprotic? iii. amphoteric? d. (1.8 points) Choose one of the chemicals from the original list and write the complete acid-base reaction in water. ii. aprotic? v. vi.
Lewis acids:
Lewis bases:
e. (0.6 points) Label the conjugate acid-base pairs above the in reaction you wrote. 2. (1.6 points) Will the addition of the following chemicals to water result in an acidic, a basic or a neutral solution? a. NaHSO4 b. NaCN
614f79cc42bb7648223ed61dcde68e44c2d1a17b.doc
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c. NaBr d. NaHCO3 e. Na2O
f. HCN g. LiF h. NaClO4
3. (3 points) Homework questions 17.41: A 0.015 M solution of hydrogen cyanate, HOCN, has a pH of 2.67. a. What is the hydronium ion concentration in the solution? b. What is the ionization constant, Ka, for the acid?
4. (3 points) Homework question 17.89: The base ethylamine (CH3CH2NH2) has a Kb of 4.3104. A closely related base, ethanolamine (HOCH2CH2NH2), ...
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Jefferson Community and Technical College - CHE - 4056
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