1)
a. 105g
of potassium nitrate will dissolve in 100g water at 60°C.
b. 45g
of potassium chloride will dissolve in 100g water at 60°C.
2)
a. 20g
of potassium nitrate must be added to form a saturated solution at 30°C.
b. 45g
is the smallest amount of mass of 30°C water needed to dissolve 25g potassium
nitrate.
3)
a. If
the solution is disturbed, 55g potassium nitrate will precipitate.
b. 110.2°C
water would have to be added to the original 100g water to just dissolve all of
the KNO3.
Blog Question:
When solving math word problems, I usually underline important key words and from there decipher the math portion of the problem. Solubility questions are difficult because of all the complicated wording, so identifying key points allows me to accurately solve the problem.
ISBS #25-34
1. The different temperatures that will dissolve in a certain quantity of water for hot tea is higher than the solubility of iced tea. The sugar will completely dissolve in hot tea.
2. The maximum mass of KCl that will dissolve in 100g water at 70°C is 48g.
Blog Question:
When solving math word problems, I usually underline important key words and from there decipher the math portion of the problem. Solubility questions are difficult because of all the complicated wording, so identifying key points allows me to accurately solve the problem.
ISBS #25-34
1. The different temperatures that will dissolve in a certain quantity of water for hot tea is higher than the solubility of iced tea. The sugar will completely dissolve in hot tea.
2. The maximum mass of KCl that will dissolve in 100g water at 70°C is 48g.
3.
a. 200 grams
b. 710 grams
c. 1,892 grams
4.
a. NaCl, KCl, KNO3.
b. KNO3, KCl, NaCl.
5. A saturated solution, is a solution in which the solvent
contains as much dissolved solute as it normally can at that temperature. An unsaturated
solution is a solution that contains less dissolved solute than the amount the
solvent can normally hold at that temperature.
6.
a. 30g KNO3 can dissolve into 100g water if the water
temperature is 20°C.
b. This solution is supersaturated.
c. 60g of solid KNO3 should form.
7.
a. The solution would either become saturated or remain
unsaturated.
b. The one crystal would cause the other extra solute crystals to
appear and settle, making it rebalanced.
c. The extra crystal would settle to the bottom of the container
as a precipitate, since the solvent would have contained as many solutes as it
could hold.
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