1.  An electrode of solid chromium is immersed in a1M solution of Cr3+; In a second beaker, a tin electrodeis immersed in a 1 M solution of Sn2+. The twoelectrodes are connected by a wire through a voltmeter, and the twobeakers are connected via a salt bridge. The entire system ismaintained at a T = 298K. When the connection is made between thetwo cells, what is the Eo for the cell, in volts, if thereduction potential for Cr(III) to Cr(0) is -0.74 V and thereduction potential for Sn(II) to Sn(0) is -0.14V? (a) –0.78V (b)0.78V (c) –0.60V (d) 0.60V (e) none of these
2.  Using the data in the table provided, calculatethe approximate standard state Gibbs free energy change at 298 Kfor the reaction Al2O3(s) + 3H2(g)=> 2Al(s) + 3H2O(g)
  (a) 236 (b) 886 (c) –344 (d) –1021 (e) none ofthese
3. The Ksp for lead (II) fluoride in water is 3.6 x10-8. What is its solubility in g/L? (a) 3.3 x10-3 (b) 1.3 x 10-4 (c) 0.051 (d) 2.1 (e)none of these
4. The lower the vapor pressure of a liquid, the (a) higher theboiling point (b) the lower the boiling point (c) the higher the melting point(d) the lower the melting point (e) none of these relationships aretrue.
5. Elemental phosphorous, which exists as P4molecules, has the following solubility properties: Water –insoluble; CCl4 – soluble. What may be ascertained aboutthe type of intermolecular forces which are operative whenP4 forms solutions? (a) they are ion-dipole in nature(b) they are dipole-dipole in nature (c) they are London force innature (d) they are ionic in nature (e) they are covalent innature
6. What is the order of thereaction in NO? (a) -1 (b) 0 (c) 1 (d) 2 (e) none ofthese
7. What is the order of the reaction in H2? (a) -1(b) 0 (c) 1 (d) 2 (e) none of these
