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At 20 °C, the solubility of NaNO3 in water is approximately 88 g per 100 g of water. If 100 g of NaNO3 is added to 100 g of water at 20 °C, how many grams of NaNO3 will remain dissolved in the solution?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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According to solubility data, what is the approximate solubility of KCl in 100 g of H2O at 60 °C?
A
45 g
B
50 g
C
60 g
D
35 g
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Understand that solubility is the maximum amount of solute (in this case, KCl) that can dissolve in a given amount of solvent (water) at a specific temperature, here 60 °C.
Identify that the problem provides multiple choice values for the solubility of KCl in 100 g of water at 60 °C, and you need to select the approximate correct value based on solubility data.
Recall or refer to a solubility chart or table for KCl at 60 °C, which lists the grams of KCl that dissolve in 100 g of water at that temperature.
Compare the given options (35 g, 45 g, 50 g, 60 g) to the value from the solubility data to find the closest match.
Choose the value that best matches the solubility data for KCl at 60 °C, which is approximately 50 g per 100 g of water.
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