Give the formula of the mass-action law for the dissociation of propionic acid (equation; explanation of ... Is the aqueous solution of AlCl3 acidic or alkaline?
University of Pécs, Medical School MEDICAL CHEMISTRY Semester Test Academic year 2006/2007 1st Year, 1st Semester 18. 01. 2007.
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1. List the properties of the noble gases.
2p
2. Write an equation for a disproportionation.
2p
3. List the conditions of hydrogen bond formation. Give an example for hydrogen bonding. 3p
4. Give the law of conservation of mass.
2p
5. Give one example for a basic salt and another for a double salt (two formulas).
2p
6. a. What is common in the phenomena of osmosis and freezing point depression?
2p
b. Explain the function of the semipermeable membrane.
2p
7. a. Give the formula of the mass-action law for the dissociation of propionic acid (equation; explanation of denotations)
2p
b. Give the relationship between the degree of dissociation (α) and dissociation constant (K) (Ostwald’s dilution law). (equation; explanation of denotations).
2p
8. Is the aqueous solution of AlCl3 acidic or alkaline? State your reason.
2p
9. a. Name the following compound: K3[Fe(CN)6].
1p
b. Indicate the central ion and the ligands.
2p
c. What is the coordination number of the central ion?
1p
10. Give the kinetic order of a reaction with the following rate law: v = k [A]x[B]y.
2p
11. Define the terms: boiling point, critical temperature and triple point.
3p
12. a. Depict the Daniell-type galvanic cell and write the half-cell reactions.
3p
b. Define the following terms: oxidation and reduction.
2p
c. Define the electromotive force of a galvanic cell.
2p
13. Structural formulas of vinyl, phenyl and benzyl groups.
3p
14. Give the bond angles in the carbon-tertachloride, formaldehyde and carbon dioxide molecules.
3p
15. Which cycloalkanes give unusual addition reactions with H2 or Br2?
2p
16. Give the formula of vinyl chloride. Which important plastic is formed by the polymerization of the above compound?
2p
17. Draw the structures of the following compounds: a. propionaldehyde b. salicylic acid c. phenanthrene d. cyclohexanone
4p
18. Write the chemical equations: a. benzenesulphonic acid + NaOH
b. bromination of phenol
c. formation of dimethyl disulphide
d. reduction of acetone
8p
19. Give an equation for a lactone formation.
2p
20. Explain the function of the detergents.
2p
21. Define the term diastereomerism. Give an example for a diastereomeric pair, compare their physical and chemical properties.
4p
22. Give the formula of cyclopentene. Is there any possibility for geometrical (cis-trans) isomerism in the case of this compound?
2p
23. Draw the conformational energy diagram of ethane.
2p
24. Give the equation for the formation of a hemiacetal from acetaldehyde and methanol. 2p
25. Write the equation for the oxo-enol tautomerism of pyruvic acid.
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