20. which compound shows the least increase i...
20. which compound shows the least increase in solubility in water from 50°c to 60°c? solubilities as a function of temperature kcl nacl kno₃ nano₃ clear all
Answer
# Explanation:
## Step1: Locate 50°C on x - axis
Find the solubility values of each compound at 50°C on the graph.
## Step2: Locate 60°C on x - axis
Find the solubility values of each compound at 60°C on the graph.
## Step3: Calculate increase in solubility
For KCl: Solubility at 50°C is about 40 g/100 g H₂O, at 60°C is about 45 g/100 g H₂O, increase is 45 - 40=5 g/100 g H₂O.
For NaCl: Solubility at 50°C is about 37 g/100 g H₂O, at 60°C is about 38 g/100 g H₂O, increase is 38 - 37 = 1 g/100 g H₂O.
For KNO₃: Solubility at 50°C is about 80 g/100 g H₂O, at 60°C is about 110 g/100 g H₂O, increase is 110 - 80 = 30 g/100 g H₂O.
For NaNO₃: Solubility at 50°C is about 110 g/100 g H₂O, at 60°C is about 130 g/100 g H₂O, increase is 130 - 110 = 20 g/100 g H₂O.
# Answer:
NaCl