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The reduction potential of Ag^+|(aq) to Ag(s) is +0.80 V, and the reduction potential of Cu^2+ (aq) to Cu (s) is + 0.34 V. A galvanic cell is based on the following reaction:2 Ag^+ (aq) + Cu (s) -----> 2 Ag (s) + Cu^2+ (aq)
The silver compartment contains a silver electrode and excess AgCl(s) (Ksp = 1.6 x 10^-10) which gives a silver ion concentration of 1.27 x 10^-5 M. The copper compartment contains a copper electrode and [Cu^2+] = 2.0 M.
a) Claculate the potential for this cell, Ecell, at 25 degree Celsius.
b) Can a reaction be spontaneous at 298 K when its delta Grxn (298 K) is positive?
Explain.
c) A reaction taking place under standard conditions is sponteneous at 1000 K but is nonsponteneous at 300 k. What are the signs of delta Hrxn and delta S rxn?
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When a sample of PCl5(g) (0.1612 mol/L) is placed in 35.00 L reaction vessel at 878.0 K and allowed to come to equilibrium the mixture contains 3.122 mol of PCl3(g)
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If the silver -silver chloride electrode is replaced with a saturated calomel electrode, what is the new cell voltage?
When most Fe3+ salts are dissolved in dilute nitric acid, the solution is often yellow to orange-yellow in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution
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Show how you might synthesize this compound from an alkyl bromide and a nucleophile in an SN2 reaction the compound is an OCH3 attached to cyclohexane
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a 0.1276 g sample of an unknown monoprotic acid was dissolved in 25.0 ml of water and titrated with 0.0633 m naoh
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