1. (Based on a problem in Stumm and Morgan¹) (a) Determine the solubility (in mol/L) of Au() (i.e., calculate Aur) in seawater in equilibrium with the atmosphere. If the volume of the world's oceans is 1.37 x 10⁹ km³, how much gold (in kg) can the oceans hold? Seawater has a pH = 8.1 and [CI] = 0.545 M. The following equilibrium constants may be useful: AuCl₂ += Au() +2C1™ log K = 19.2 AuCl +3e Au(s) + 4C1 = log K = 51.3 Au(OH) + 4H+ + 4C1 = AuCl + 4H₂O log K= 29.64 O2(g) + 4H+ + 4e" = 2H₂O E = 1.226 V
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A1
![11.10. (Based on a problem in Stumm and Morgan¹) (a) Determine the solubility
(in mol/L) of Au() (i.e., calculate Aur) in seawater in equilibrium with
the atmosphere. If the volume of the world's oceans is 1.37 x 109 km³, how
much gold (in kg) can the oceans hold?
Seawater has a pH = 8.1 and [CI] = 0.545 M. The following equilibrium
constants may be useful:
AuCl₂ +e=Au() +2C1™
log K = 19.2
AuCl +3e Au(s) + 4C1-
log K = 51.3
Au(OH) + 4H+ + 4C1 = AuCl + 4H₂O log K= 29.64
O2(g) + 4H+ + 4e = 2H₂O
E = 1.226 V](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4c42983-e41f-4965-8d1f-4797ae3a2dab%2F94d9a1d7-34b4-4ef6-957b-b761539e4b78%2Faeexvw_processed.jpeg&w=3840&q=75)
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