Name: Teacher : Period: ◄ APEX Calendar November 2016 ► Sun Mon Tue Wed Thu Fri Sat 1 In which of the following liquid molecules the IMF include dipole- dipole interactions? and CH2F2 2 A hard binary compound at room temperature did not conduct electricity as a pure solid but became highly conducting when dissolved in water. What type of interactions may be present in the molecule? 3 Arrange Nitrogen, Oxygen and Fluorine in the increasing order of bond enthalpies. 4. Arrange the following compounds in the increasing of bond polarity and 5 6 Time Ends 7 The lattice energy of a salt is related to the energy required to separate the ions. For which of the following pairs of ions is the energy that is required to separate the ions largest? (Assume that the distance between the ions in each pair is equal to the sum of the ionic radii.) Na+(g) and Cl−(g), Cs+(g) and Br−(g), Mg2+(g) and O2−(g), Ca2+(g) and O2−(g) 8 .The first five ionization energies of a second-period element are 801, 2430, 3660, 25000 and 32820 K. J Which of the following correctly identifies the element and best explains the data in the table? 9 Ethane and Butane compound has the higher boiling point, and why is that compound’s boiling point higher? 10 Benzene, C6H6, sparingly soluble in water, what type of the intermolecular forces of attraction between water and benzene? 11 11. If equal masses of the following compounds undergo complete combustion, which will yield the greatest mass of CO2 ? Benzene, or Cyclo hexane or glucose or Methane. 12
13 14 The ionic radius of the following cations is given respectively. , , and are 60, 95, 99 and 81 pm. Whicn one will have weakest interaction with neighboring water molecule in aqueous solution? 15. 23 of the sample of a compound has 12 grams C, 3 grams H and 8 grams of O. E. Formula is 16 Boiling points of Carbon tetrachloride and Carbondisilfide 76.7 and 46.5. Based on the information which one has a higher equilibrium vapor pressure and why. 17 For , , and the electron pair domain geometry, molecular shapes and bond angles and hybridization of the central atom. 18 A mixture containing moles ethyl acetate, buty acetate was separated using distillation. Which was initially present in higher concentration and justify. 19 20 21 The first 5 ionization energies of an element X is 577, 1816, 2745, 11577 and 14, 482. Then the formula of its oxide is 22 H can form H2O and H2O2. Li can form Li2O, Li202. Na can form Na2O, Na2O2 While K can form K2O, K2O2, KO2, Then Rb can form and name those oxides. 23 Among Noble gases, Alkali metals, Halognes, Transition metals, Actinies. Most difficult to oxidize are Always radioactive Most likely to form anions 24 A non- polar molecule but contains polar bonds among , and CHF3 is 25 The molecule that contains only single bonds among , C6H6, C2H6 , Acetic acid, C2H5COOCH3 26 27 28 A student mixes equal volumes of 1.0 M tin(II)fluoride and Zinc sulfate, the formula of the precipitate and the net ionic equation are 29 Among Fluorine, Chlorine, Bromine, Krypton and Nitrogen the element with highest melting point is…. Justify your answer with IMF. 30 Among Hydrogen, Oxygen, Fluorine, Nitrogen and Xenon. The LDF are weakest in