Hi Steve,
I'm starting a new module on kinetics, just a couple of questions...
1. How many electrons are transferred in the following reaction?
2ClO3- + 12H+ + 10I- -> 5I2 + Cl2 + 6H2O
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<o:p>Is it 10 electrons or do I combine the two half equations to give 20 electons??</o:p>
<o:p></o:p>
<o:p>2. A reaction was found to have a rate which varied with time and a half-life that depended on the initial concentration of reactant. For this process, which one of the following plots will be linear?</o:p>
<o:p>- ln[A] vs time</o:p>
<o:p>- 1/[A] vs time</o:p>
<o:p>- both are linear</o:p>
<o:p>- either are linear</o:p>
<o:p></o:p>
<o:p>I think either are linear because only zero-order reaction is depended on the initial concentration. First-order is dependent on reaction constant and that second-order is dependent on time. Am I right?</o:p>
<o:p></o:p>
<o:p>3. For a particular reaction in a voltaic cell both ΔHo and ΔSo are positive. Which of the following statements is true?</o:p>
<o:p> | - Ecell will increase with an increase in temperature. <o:p></o:p> |
| - Ecell will decrease with an increase in temperature. <o:p></o:p> |
| - Ecell will not change when the temperature increases. <o:p></o:p> |
| - ΔGo > 0 for all temperatures. <o:p></o:p> |
| - None of the above statements are true. <o:p></o:p> |
<o:p>I have no idea how to do this question. Could you help me??</o:p>
<o:p>Thank very much!</o:p>
</o:p>
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