Answer the following questions using the solubility curve a- Approximately how m
ID: 482392 • Letter: A
Question
Answer the following questions using the solubility curve
a- Approximately how many grams of KNO3 will dissolve in 100g at 20 degrees C? How many at 60 degrees C?
b- How many grams of KNO3 would dissolve in only 10g of water used at 20 degrees C and 60 degrees C?
c- Approximately how many grams of NaCl will dissolve in 100 grams of water at 20 degrees C? How many at 60?
d- Will there be any visible change in the amount of NaCl that dissolve in a given amount of water as temperature increases from 20 degrees C to 60 degrees C to 100 degrees C?
CHM 2046 Ten on Solubiliry ofa Salt FI6 10 NHACI 40 Naci NHm SO2 0 10 20 30 40 50 60 70 00 90 100 Temperature (cExplanation / Answer
Approximately how many grams of KNO3 will dissolve in 100g at 20 degrees C
35g
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How many grams of KNO3 will dissolve in 100g of water at 60°C?
108g
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b- How many grams of KNO3 would dissolve in only 10g of water used at 20 degrees C and 60 degrees C?
= [10.8g – 3.5g]= 7.3 g
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c- Approximately how many grams of NaCl will dissolve in 100 grams of water at 20 degrees C?
=38 grams
How many at 60?
=39 grams
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d- Will there be any visible change in the amount of NaCl that dissolve in a given amount of water as temperature increases from 20 degrees C to 60 degrees C to 100 degrees C?
yes
= [ 40 g – 3 8g]= 2 g
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