A. Calculate the ionic strength of 0.16 M Al2(SO4)3. B. If a calcium ion selective electrode...
A. Calculate the ionic strength of 0.16 M Al2(SO4)3.
B. If a calcium ion selective electrode immersed in 0.1 M CaCl2 reads +40 mV, what should the potential be in 1.0 M CaCl2?
Homework Answers
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A. Calculate the ionic strength of 0.16 M Al2(SO4)3.
B. If a calcium ion selective electrode...
When a fluoride electrode was immersed in standard solutions (maintained at a constant ionic strength of...
When a fluoride electrode was immersed in standard solutions (maintained at a constant ionic strength of 0.1 M with NaNO3), the following potentials (versus S.C.E.) were observed: Concentration of F− (mM) E (mV) 1.00 x 10−2 100.0 1.00 x 10−1 41.5 1.00 -17.0 Because the ionic strength is constant, the response should depend on the logarithm of the F− concentration. Find the concentration of F− (in mM) in an unknown that gave a potential of 22.4 mV. (Keep two sig....
A cation-sensitive electrode displays a (referenced) potential of 209.6 mV in a 0.0123-M CaCl2 solution. Calculate...
A cation-sensitive electrode displays a (referenced) potential of 209.6 mV in a 0.0123-M CaCl2 solution. Calculate the ionic strength of the above solution. μ = Use the extendeded Debye-Huckel equation to calculate the activity coefficient of the calcium ion in this solution, at 25°C? logγ=−0.51Z2μ√1+αμ√305 Where α = 600 pm (for Ca2+). γCa2+ = Calculate the activity of Ca2+ in this solution. aCa2+ =
(3) Calculate the ionic strength of the following, assuming complete dissociation of salts: (a) 0.54 mM...
(3) Calculate the ionic strength of the following, assuming complete dissociation of salts: (a) 0.54 mM Cas (b) 0.035 M AIBr; (c) 1.30 M K S04 (4) A cyanide ion-selective electrode obeys the equation, EEK -0.05916log(CN). The potential was -0.230 V when the electrode was immersed in 1.00 mM NaCN. (a) Evaluate the constant in the equation (b) Using the result from part (a), find (CN] if E=-0.280 V. (c) Without using the constant from part (a), find (CN Jif...
nalytical Chemistry I) 20 What is the ionic strength of a 0.0100 M aluminum sulfate [Al2(SO4)3]...
nalytical Chemistry I) 20 What is the ionic strength of a 0.0100 M aluminum sulfate [Al2(SO4)3] solution? (5 Points) 0.0100 0.0600 0.300 0 0.0300 O 0.150
When an ion-selective electrode for X was immersed in 0.0680 M XCl, the measured potential was...
When an ion-selective electrode for X was immersed in 0.0680 M XCl, the measured potential was 0.0220 V. What is the concentration of X when the potential is 0.0370 V? Assume that the electrode follows the Nernst equation, the temperature is at 25
When an ion‑selective electrode for X+ was immersed in 0.0709 M XCl, the measured potential was...
When an ion‑selective electrode for X+ was immersed in 0.0709 M XCl, the measured potential was 0.0430 V . What is the concentration of X+ when the potential is 0.0580 V ? Assume that the electrode follows the Nernst equation, the temperature is at 25 °C, and that the activity coefficient of X+ is 1.
When an ion‑selective electrode for X+ was immersed in 0.0652 M XCl, the measured potential was...
When an ion‑selective electrode for X+ was immersed in 0.0652 M XCl, the measured potential was 0.0420 V . What is the concentration of X+ when the potential is 0.0570 V ? Assume that the electrode follows the Nernst equation, the temperature is at 25 °C, and that the activity coefficient of X+ is 1.
When an ion‑selective electrode for X+ was immersed in 0.0312 M XCl, the measured potential was...
When an ion‑selective electrode for X+ was immersed in 0.0312 M XCl, the measured potential was 0.0230 V . What is the concentration of X+ when the potential is 0.0380 V ? Assume that the electrode follows the Nernst equation, the temperature is at 25 °C, and that the activity coefficient of X+ is 1.
When an ion-selective electrode for X was immersed in 0.0260 M XCl, the measured potential was...
When an ion-selective electrode for X was immersed in 0.0260 M XCl, the measured potential was 0.0430 V. What is the concentration of X when the potential is 0.0580 V? Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
When an ion-selective electrode for X was immersed in 0.0470 M XCI, the measured potential was...
When an ion-selective electrode for X was immersed in 0.0470 M XCI, the measured potential was 0.0340 V. What is the concentration of X when the potential is 0.0490 V? Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1 Number
(3) Calculate the ionic strength of the following, assuming complete dissociation of salts: (a) 0.54 mM Cas (b) 0.035 M AIBr; (c) 1.30 M K S04 (4) A cyanide ion-selective electrode obeys the equation, EEK -0.05916log(CN). The potential was -0.230 V when the electrode was immersed in 1.00 mM NaCN. (a) Evaluate the constant in the equation (b) Using the result from part (a), find (CN] if E=-0.280 V. (c) Without using the constant from part (a), find (CN Jif...
nalytical Chemistry I) 20 What is the ionic strength of a 0.0100 M aluminum sulfate [Al2(SO4)3] solution? (5 Points) 0.0100 0.0600 0.300 0 0.0300 O 0.150
When an ion-selective electrode for X was immersed in 0.0470 M XCI, the measured potential was 0.0340 V. What is the concentration of X when the potential is 0.0490 V? Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1 Number
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