The following questions refer to the electrochemical cell given below: Au (s)|Au
ID: 924358 • Letter: T
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The following questions refer to the electrochemical cell given below: Au (s)|AuCl2^- (0.05 M), Cl^- (0.35 M)||IO^-4' (0.15 M), H+ (1 M), I03^- (0.08 M) I Pt (s) Write the reaction occurring at the anode, cathode, and the overall reaction. What is oxidized? Reduced? The oxidizing agent? The reducing agent? Calculate the overall cell potential under the specified conditions. Write the reaction that occurs, if any, when the following experiments are carried out under standard state Condit A strip of zinc metal is dipped into an aqueous solution of Pb(N03)2. A silver wire is immersed in an aqueous solution of NiCl2. What fraction of ethane-1,2-dithiol is in each form (H2A, HA^- A2^-) at pH 9.25? Calculate the pH at each point listed for the titration of 100.0 mL of 0.100 M diprotic acid (H2A) with 1.00 M 0.0,9,10,15,20, and 22 mL. The pKa's for the dipodic acid are: pKal = 4.94 and pKa2 = 9.82. Calculate the pH at each point listed for the titration of 25.00 mL of 0.197 M hydrobromic acid with 0.256 M lith 0.0, 15.0, Veq, 25.0 mL. Ophthalmic acid is a diprotic acid and undergoes the following dissociations in aqueous solution: Calculate the pH of a 0.100 M solution of sodium hydrogen phthalate. How many grams of H_2CO_3 must be added to 4.00 g of NaHCO_3 to give a pH of 5.80 in 500 mL of solution? From the figure shown below, write the short-hand notation for the electrochemical cell u/k occurring in this cell? Calculate the Gibbs free energy associated with this cell.Explanation / Answer
its a acidic buffer solution. we need Pka1 for Carbonic acid ....here its not given so i am adding from my side pka1 = 6.35 let x gram of carbonic acid is to be added.
pH = Pka + log(Salt/acid)
5.80 = 6.35 + log[(4/84)x(60/x)]
taking antilog of
-0.55 = log(2.857/x)
0.281 = 2.857/x
x = 2.857/0.281 = 10.16 gram of carbonic acid
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