A KNO3 solution containing 37 g of KNO3 per 100.0 g of water is cooled from 45 °C to 0 °C. 100 90 80 70 Solubility (g solute in 100 g H2O) Pb(NO3)2 NaNO3 KNO, Cach 60 50 40 30 Na₂SO KCI као K₂Cr₂O7 ▾ Correct Since the solubility of KNO3 is greater than 37 g at 45 °C, a KM than possible at that temperature and is unsaturated. The solubilit 100 g of water at 0°C is holding as much solute as possible at th as the solution cools. Part B What mass of KNO3 will precipitate? Express your answer in grams to two significant figures. ▸ View Available Hint(s) ΜΕ ΑΣΦ ? 10 20 2° 0+ to 0 -10 10 20 -20 30 40 50 60 Temperature (°C) 16 70 80 50 90 100 g

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 127QRT
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Question
A KNO3 solution containing 37 g of KNO3 per 100.0 g of water is
cooled from 45 °C to 0 °C.
100
90
80
70
Solubility (g solute in 100 g H2O)
Pb(NO3)2
NaNO3
KNO,
Cach
60
50
40
30
Na₂SO
KCI
као
K₂Cr₂O7
▾
Correct
Since the solubility of KNO3 is greater than 37 g at 45 °C, a KM
than possible at that temperature and is unsaturated. The solubilit
100 g of water at 0°C is holding as much solute as possible at th
as the solution cools.
Part B
What mass of KNO3 will precipitate?
Express your answer in grams to two significant figures.
▸ View Available Hint(s)
ΜΕ ΑΣΦ
?
10
20
2°
0+
to
0
-10
10
20
-20
30
40 50
60
Temperature (°C)
16
70
80
50
90
100
g
Transcribed Image Text:A KNO3 solution containing 37 g of KNO3 per 100.0 g of water is cooled from 45 °C to 0 °C. 100 90 80 70 Solubility (g solute in 100 g H2O) Pb(NO3)2 NaNO3 KNO, Cach 60 50 40 30 Na₂SO KCI као K₂Cr₂O7 ▾ Correct Since the solubility of KNO3 is greater than 37 g at 45 °C, a KM than possible at that temperature and is unsaturated. The solubilit 100 g of water at 0°C is holding as much solute as possible at th as the solution cools. Part B What mass of KNO3 will precipitate? Express your answer in grams to two significant figures. ▸ View Available Hint(s) ΜΕ ΑΣΦ ? 10 20 2° 0+ to 0 -10 10 20 -20 30 40 50 60 Temperature (°C) 16 70 80 50 90 100 g
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