Three students studied the following solubility curve. 100 90 NANO, 80 70 60 CaCl 50 Pb(NO3)2 40 KCI NaCi 30 20 KCIO, 10 Ce,(SO,) 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Solubility (g of salt in 100 g H,O) KNO3
Three students studied the following solubility curve. 100 90 NANO, 80 70 60 CaCl 50 Pb(NO3)2 40 KCI NaCi 30 20 KCIO, 10 Ce,(SO,) 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Solubility (g of salt in 100 g H,O) KNO3
Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter11: Solutions And Colloids
Section: Chapter Questions
Problem 17E: Supersaturated solutions of most solids in water are prepared by cooling saturated solutions....
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![Three students studied the following solubility curve.
100
90
NANO
80
70
60
CaCl
Pb(NO,)2
50
40
KCI
NaCI
30
20
KCIO,
10
Ce,(SO)
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
They were asked to determine the amount of K2Cr207
that needs to be added to 10 g K2Cr207 to create a
saturated solution at 50 C.
Student 1 said 20 g more would need to be added,
student 2 said 40 g and student 3 said 30 g K2Cr207
needs to be added.
Which student is correct? Provide evidence from the
solubility curve to support your claim.
Solubility (g of salt in 100 g H,O)
NO3
FONY](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F680dbd4e-8cc1-4f07-b455-1c0c98e4a0fa%2F837a9eb4-4482-4456-aeca-3af14f76ff7d%2F8azcsdg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Three students studied the following solubility curve.
100
90
NANO
80
70
60
CaCl
Pb(NO,)2
50
40
KCI
NaCI
30
20
KCIO,
10
Ce,(SO)
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
They were asked to determine the amount of K2Cr207
that needs to be added to 10 g K2Cr207 to create a
saturated solution at 50 C.
Student 1 said 20 g more would need to be added,
student 2 said 40 g and student 3 said 30 g K2Cr207
needs to be added.
Which student is correct? Provide evidence from the
solubility curve to support your claim.
Solubility (g of salt in 100 g H,O)
NO3
FONY
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