Question

2 Use the chart to answer the question. Solubility Curves of Various Salts 180 160 140 120 100 80 KNO3 in g NaCl in g KCl in g Amount of Solute Dissolved in 100 g of Water (grams) 60 40 20 20 40 60 80 100 1200 20 Temperature (°C) If a student makes a saturated solution of potassium nitrate at 80°C, then cools it to 20°C, how many grams of solute would precipitate out of the solution? MO A B C D 10 g 20 g 60 g 140 g​

Answer 1

According to the information in the graph, it can be inferred that the amount of solute that will precipitate out of solution at 20°C is 130 grams.

How to calculate the amount of solute that precipitates out of solution?

To calculate the amount of solute that precipitates out of solution we must identify the solute data at 80°C and 20°C and identify the difference as shown below:

• Quantity of solute at 80°C: 170 grams.
• Quantity of solute at 20°C: 40 grams.

• 170 grams - 40 grams = 130 grams

According to the above, the amount of solute that will precipitate out of solution due to the change in temperature is 130 grams of KNO3.

Note: This question is incomplete because the graph is missing. Here is the graph

Learn more about solute in: brainly.com/question/7932885

#SPJ1