10. A zinc rod is placed in 0.1 M solution of zinc sulphate at 25OC. Assuming that the salt is di...
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10. A zinc rod is placed in 0.1 M solution of zinc sulphate at 25OC. Assuming that the salt is di...
A galvanic (voltaic) cell consists of an electrode composed of zinc in a 1.0 M zinc...
A galvanic (voltaic) cell consists of an electrode composed of zinc in a 1.0 M zinc ion solution and another electrode composed of gold in a 1.0 M gold(III) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
1-One-half of an electrochemical cell consists of a pure Zinc electrode in a solution of Zn2+...
1-One-half of an electrochemical cell consists of a pure Zinc electrode in a solution of Zn2+ ions; the other half is a Lead electrode immersed in a solution of Pb2+ solution. The half-cell potentials for Zinc and Lead are -0.763 V and -0.126 V, respectively. (a) If the cell is a standard one, write the spontaneous overall reaction and calculate the voltage that is generated. (b) Compute the cell potential at 25oC if the Zn2+ and Pb2+ concentrations are 10-2...
1) The ionization constant for NH4+ is K = 5.8 x 10-10 at 25oC. It is...
1) The ionization constant for NH4+ is K = 5.8 x 10-10 at 25oC. It is in a reversible equilibrium with ammonia and H+. NH4+ --> NH3 + H+ where, H+ + NH3 --> NH4+ with a k1 = 2.300 x 1010 M-1 s-1 A temperature jump from 20oC to 25oC is made on a 0.1 M NH4Cl solution at pH 6. Calculate the relaxation time in microseconds for the reaction, assuming that the mechanism is given by the ionization...
*redox reactions in electeochemical cells* c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu I soaked a porous cup in tap water for a few minutes and then i let it stand in a 100 ml beaker containing 10ml of 0.1 M Fe...
*redox reactions in electeochemical cells*
c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu
I soaked a porous cup in tap water for a few minutes and then i
let it stand in a 100 ml beaker containing 10ml of 0.1 M FeSO4. I
added enough 0.1M CuSO4 to the cup until the two liquid levels were
the same height. I inserted a zinc strip into the 0.1 M FeSO4 and a
shiny copper strip into the 0.1 M CuSO4. I connected the...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected via ammeter to COM terminal of a digital voltmeter. Then (+) terminal of the voltmeter is connected to SHE, which, in turn, is connected via salt bridge with ZnSO4 solution. Initially, current of 30 mA flows through the ammeter. What is the reading of the voltmeter if the internal resistance of battery is 10 ohm? The standard reduction potential of zinc ions is -0.76...
Solid zinc phosphate and solid barium phosphate are in equilibrium with a solution containing 1.15×10-2 M...
Solid zinc phosphate and solid barium phosphate are in equilibrium with a solution containing 1.15×10-2 M barium nitrate. Calculate the concentration of zinc ion present in this solution.
Calculate the potential of a silver electrode immersed in a solution that is 10-8 M in...
Calculate the potential of a silver electrode immersed in a solution that is 10-8 M in iodide and saturated with AgI (Ksp AgI = 8.3·10-17)
chemist adds 265.0 mL of a 2.30 ~ 10°°M zinc oxalate (ZnC,02) solution to a reaction...
chemist adds 265.0 mL of a 2.30 ~ 10°°M zinc oxalate (ZnC,02) solution to a reaction flask. Calculate the mass in milligrams of zinc oxalate the chemist has dded to the flask. Round your answer to 3 significant digits. 1 mg xs ?
2) (10 points total) (Problem 16.145 from your text (Tro)) Lactic acid is a weak a calcium salt is a source of...
2) (10 points total) (Problem 16.145 from your text (Tro)) Lactic acid is a weak a calcium salt is a source of calcium for growing animals. A saturated solution of this salt, which we can your text (Tro)) Lactic acid is a weak acid found in plks represent as Ca(Lact), has a [Ca²+] -0.26 M and a pH - 8.78. Assuming the salt is completely dissociated, calculate the K, of the acid. (Show all work for full credit) PH=2A] =...
A solution containing 0.1 7 M Pb". 1.5 x 10-6 М РЬ". 1.5 x 10-6 M Mn". 0.17 M MnO-, and 0.88 M HN...
I need help with just the last part where it asks to find the
pH.
A solution containing 0.1 7 M Pb". 1.5 x 10-6 М РЬ". 1.5 x 10-6 M Mn". 0.17 M MnO-, and 0.88 M HNO, was prepared. For this solution, the balanced reduction half-reactions and overall net reaction shown can occur. E1.690Vv E1.507 V A. Determine E AG, and K for this reaction. Eel0.183 AG-176600 9.024 x1030 B. Calculate the value for the cell potential, Ecell,...
*redox reactions in electeochemical cells*
c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu
I soaked a porous cup in tap water for a few minutes and then i
let it stand in a 100 ml beaker containing 10ml of 0.1 M FeSO4. I
added enough 0.1M CuSO4 to the cup until the two liquid levels were
the same height. I inserted a zinc strip into the 0.1 M FeSO4 and a
shiny copper strip into the 0.1 M CuSO4. I connected the...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected via ammeter to COM terminal of a digital voltmeter. Then (+) terminal of the voltmeter is connected to SHE, which, in turn, is connected via salt bridge with ZnSO4 solution. Initially, current of 30 mA flows through the ammeter. What is the reading of the voltmeter if the internal resistance of battery is 10 ohm? The standard reduction potential of zinc ions is -0.76...
chemist adds 265.0 mL of a 2.30 ~ 10°°M zinc oxalate (ZnC,02) solution to a reaction flask. Calculate the mass in milligrams of zinc oxalate the chemist has dded to the flask. Round your answer to 3 significant digits. 1 mg xs ?
2) (10 points total) (Problem 16.145 from your text (Tro)) Lactic acid is a weak a calcium salt is a source of calcium for growing animals. A saturated solution of this salt, which we can your text (Tro)) Lactic acid is a weak acid found in plks represent as Ca(Lact), has a [Ca²+] -0.26 M and a pH - 8.78. Assuming the salt is completely dissociated, calculate the K, of the acid. (Show all work for full credit) PH=2A] =...
I need help with just the last part where it asks to find the
pH.
A solution containing 0.1 7 M Pb". 1.5 x 10-6 М РЬ". 1.5 x 10-6 M Mn". 0.17 M MnO-, and 0.88 M HNO, was prepared. For this solution, the balanced reduction half-reactions and overall net reaction shown can occur. E1.690Vv E1.507 V A. Determine E AG, and K for this reaction. Eel0.183 AG-176600 9.024 x1030 B. Calculate the value for the cell potential, Ecell,...
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