q17 12. The complex [Cu(NH₂),] absorbs light with a wavelength of 342 nm. What is the value of Aº inkJ/mole?13. Which of the following is more paramagnetic and why? Prove your answer:[Mn(NO₂).] or [Mn(H₂O)]³+14. Is the reaction O₂ + 4H* + 4Fe²+ 2 H₂O + 4Fe³+ (AG° = -177.35 kJ) spontaneous at 25°C and a pH of2.56 if [Fe²+] = 0.02 M, [Fe³+] = 0.89 M and Po₂ = 0.35 atm?at15. For the reaction: CaCO3) CaO + CO2(g) use the thermodynamic data provided to calculate:a) AG⁰ b) equilibrium constant, Kc) the temperature at which the reaction in equilibrium T= 25°C16. The reaction (Sn | Sn²+|| Pb²+ | Pb) is at equilibrium at 25°C. Using the standard voltage, determine:a) Eºb) Kc) The equilibrium concentration of Zn²+ is if [Cr³+] equals 0.19 M.17. How many grams of aluminum are produced by the electrolysis of Al₂O3 at 7.5 amps in one hour?Al₂O3 + 6H+6e* - 2A1+ 3H₂O2010½/218. An ancient artifact exhibited ¹4C (t = 5730 yrs) decay emissions of 12/min. Living wood has anactivity of 22/min. How old was the artifact?theof 238U bygrams238U 234 Th + ¹He(238U=238.050783 g/mol, 234 Th=234.043602 g/mol,19. How much energy is released by the decay of 15a.20. Correctly name each of the following compounds:b.bevernsH,9(00.3OHprocessHe = 4.002603 g/mol)C.niwlidiCI1 st 60OAH'0) 12 66

we have to calculate the mass of Al deposited

c) The equilibrium concentration 17. How many grams of aluminum are produced by the electrolysis of Al₂O3 at 7.5 amps in one hour? Al₂O3 + 6H* + 6e - 2A1+ 3H₂O 1a ( 1730) decay emissions of 12/min. Living wood has an

c) The equilibrium concentration 17. How many grams of aluminum are produced by the electrolysis of Al₂O3 at 7.5 amps in one hour? Al₂O3 + 6H* + 6e - 2A1+ 3H₂O 1a ( 1730) decay emissions of 12/min. Living wood has an

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

q17

12. The complex [Cu(NH₂),] absorbs light with a wavelength of 342 nm. What is the value of Aº in
kJ/mole?
13. Which of the following is more paramagnetic and why? Prove your answer:
[Mn(NO₂).] or [Mn(H₂O)]³+
14. Is the reaction O₂ + 4H* + 4Fe²+ 2 H₂O + 4Fe³+ (AG° = -177.35 kJ) spontaneous at 25°C and a pH of
2.56 if [Fe²+] = 0.02 M, [Fe³+] = 0.89 M and Po₂ = 0.35 atm?
at
15. For the reaction: CaCO3) CaO + CO2(g) use the thermodynamic data provided to calculate:
a) AG⁰ b) equilibrium constant, Kc) the temperature at which the reaction in equilibrium T= 25°C
16. The reaction (Sn | Sn²+|| Pb²+ | Pb) is at equilibrium at 25°C. Using the standard voltage, determine:
a) Eº
b) K
c) The equilibrium concentration of Zn²+ is if [Cr³+] equals 0.19 M.
17. How many grams of aluminum are produced by the electrolysis of Al₂O3 at 7.5 amps in one hour?
Al₂O3 + 6H+6e* - 2A1+ 3H₂O
2010
½/2
18. An ancient artifact exhibited ¹4C (t = 5730 yrs) decay emissions of 12/min. Living wood has an
activity of 22/min. How old was the artifact?
the
of 238U by
grams
238U 234 Th + ¹He
(238U=238.050783 g/mol, 234 Th=234.043602 g/mol,
19. How much energy is released by the decay of 15
a.
20. Correctly name each of the following compounds:
b.
beverns
H,9
(00.3
OH
process
He = 4.002603 g/mol)
C.
niwlidi
CI
1 st 60
OAH'0) 12 66

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