chemistry:solved problems 12

1. The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215EC, and the following data were obtained. Time(s) [CH3NC](M) 0                          0.0165 2000.                        0.0110 5000.                        0.00591 8000.                        0.00314 Calculate the average rate of reaction, in M/s, for the time interval between each measurement. (1) First […]

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chemistry:solved problems 11

1.  Using standard reduction potentials (Table D in Appendix II), calculate the standard cell potential (EEcell) for each of  the following reactions. Which of these reactions do you expect to occur spontaneously in the forward direction? (a)  Cl2(g)   +   2 I – (aq)     ®     2 Cl – (aq)   +   I2(s) Reduction half-reaction: Cl2 +   2 […]

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chemistry:solved problems 10

1.  Determine the oxidation number of the indicated atom in each of the following compounds or ions. (a)  each iron atom in Fe2O3 The oxidation number of each oxygen atom is  – 2. The total for all the oxygen atoms is  – 6. Thus, the total for both iron atoms is +6. Therefore, the oxidation […]

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chemistry:solved problems 9

1.   A solution is 0.50M with respect to HCl and 1.00M with respect to formic acid, HCOOH. Calculate the concentration of the formate ion, HCOO –, in this solution. Is the concentration of HCOO – found in this solution greater than, less than, or equal to that found in a 1.00M solution of formic acid? […]

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