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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

Introductory Chemistry: An Active Learning Approach
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter18: Chemical Equilibrium
Section: Chapter Questions
Problem 3E
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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
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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