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The molar conductivity of 0.0250 M HCOOH (aq) is 4.61 mSm^2/mol. Determine the pKa of the acid.
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- The mobility of a chloride ion in aqueous solution at 25 °C is 7.91 × 10−8 m2 s−1 V−1. Calculate the molar ionic conductivity.What mass of iron (III) sulfate is present in 100 cm3 of the solution used to measure the standard electrode potential of this cell?The limiting molar conductivities of NaI, NaNO3, and AgNO3 are 12.69 mS m2 mol−1, 12.16 mS m2 mol−1, and 13.34 mS m2 mol−1, respectively (all at 25 °C). What is the limiting molar conductivity of AgI at this temperature? Hint: Each limiting molar conductivity can be expressed as a sum of two ionic conductivities.
- The limiting molar conductivities of KCl, KNO3 and AgNO3 are 14.99, 14.50 and 13.34 mS-m2/mol, respectively (all at 25 °C). What is the limiting molar conductivity of AgCl at this temperature?what the different between Equivalent conductance and molar conductanceThe exchange current density at the electrode Pt| Fe3+| Fe2+ is 2.4 x 10-3 A cm-2, How many electrons are transported through the double layer per second in the cell (area of 1 cm2 each)? Estimate the number of times per second that a single atom on the surface takes part in an electron transfer event, assuming that the atom occupies 280 pm2 of the surface of the electrode
- Calculate the ionic strength of CaCl2 (aq, 0.001 M) at 298 K.The standard cell potential of a Daniell cell, with cell reactionZn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), is 1.10 V at 25 °C.Calculate the corresponding standard reaction Gibbs energy.Describe the mechanism of proton conduction in water. Could a similar mechanism apply to proton conduction in liquid ammonia?