Equilibrium-octahedral complexes have geometric isomers , Chemistry

1. A 50.0-L reaction vessel contains 1.00 mol N2, 3.00 mol H2, and 0.500 mol NH3. Will more ammonia, NH3, be formed or will it dissociate when the mixture goes to equilibrium at 4000C? The equation is   N2(g) + 3H2(g)  ↔ 2NH3(g).  Kc is 0.500 at 4000C.

2. The equilibrium constant Kc for the reaction  2NO(g) + O2(g)  ↔2NO2(g)  equals 4.0 x1013 at 250C. Does the equilibrium mixture contain predominantly reactants or products?   If[NO] = [o2 = 2.0 x 10-6M]  at equilibrium, what is the equilibrium concentration of NO2?

3. Carbon monoxide and hydrogen react in the presence of a catalyst to form methanol, CH3OH:                    

CO(g) + 2H2(g) ↔CH3OH(g)

An equilibrium mixture of these three substances is suddenly compressed so that the concentrations of all substances initially double. In what direction does the reaction go as a new equilibrium is attained?

4.  The reaction  CO(g) + H2O(g) ↔CO2(g) + H2(g)   is used to increase the ratio of hydrogen in synthesis gas (mixtures of CO and H2). Suppose you start with 1.00 mol each of carbon monoxide and water in a 50.0-L vessel. How many moles of each substance are in the equilibrium mixture at 10000C? The equilibrium constant Kc at this temperature is 0.58.

5.   Do any of the following stable octahedral complexes have geometric isomers? If so, draw them.

a. [Co(NH3)5Cl]2_                                        b. [Co(NH3)4(H2O)2]3_

6.(a)   Explain the bonding in Cr(NH3)6]3+  complex in terms of VBT.

(b)      Using Crystal Field Theory explain which one of the following is a low-spin complex and the other one is high-spin complex.

            [Co(H2O)6]Cl2    and    K4[Co(CN)6]  .                   

Posted Date: 2/18/2013 6:50:44 AM | Location : United States

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