Answer Happy

6. Which of the following pairs can represent the respective empirical formula and molecular formula of a certain compound? A CH and CH4 B. CH and C.H. C. CH2 and CH D. CH; and CH HPHS4068/ Ex 4 Ch 7-8/P.5 7. Which of the following compounds have the same empirical formula? (1) But-2-ene (2) Propane (3) Ethene A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) 8. Which of the following statements concerning homologous series is INCORRECT? A. Members of a series have identical chemical properties. B. Members of a series have the same general formula. C. Each member differs from the next by a -CH2-group. D. Members of a series show a gradual change of physical properties. 9. Which of the following names are INCORRECT? (1) But-3-ene (2) 1-bromo-propan-3-ol (3) 2,3-chlorobutane A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1). (2) and (3) 10. What is the IUPAC name for CH3(CH2).CHO? A. Butan-1-ol B Butanal C. 3-methylpropan-1-ol D. 3-methylpropanal