0
5) Listed below are solubility vs temperature data for an organic compound in water.
temp.
sol. in 10 mL water
0
0.15 g
20
0.30 g
40
0.65 g
60
1.10 g
80
1.70 g
a. Using the data in the above table, graph the solubility of the compound vs temperature. Connect the data points with a smooth curve.
b. Suppose 0.1 g of this compound is mixed with 1.0 mL of water and heated to 80° C. Would all of the compound dissolve? Explain.
c. The solution prepared in (b) is cooled. At what temperature will crystals of the compound appear?
d. Suppose the cooling described in (c) were continued to 0° C. How many grams of the compound would come out of solution?
What else can I help you with?
How is the melting point of an impure compound expected to change with recrystallization?
The melting point of an impure compound is expected to decrease with recrystallization. This is because impurities disrupt the crystal lattice structure, causing a broader melting point range. Recrystallization removes impurities, resulting in a purer compound with a higher melting point.
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
Lower the melting point of wax?
To lower the melting point of wax, you can consider adding a small amount of mineral oil or vegetable oil to the wax before melting it. This will decrease the overall melting temperature of the wax. Alternatively, you can mix the wax with a lower melting point wax to create a blend with a reduced melting point.
Is 70 degrees Celsius in a melting or freezing point?
A temperature of 70 degrees Celsius is typically well above both the melting and freezing points of most common substances. For water, its melting point is 0 degrees Celsius and its freezing point is 0 degrees Celsius as well.
Why is it important to determine the melting range of the impure and recrystallized sample of vanillin?
The melting point is an indication of purity.
How is the melting of an impure compound expected to change with recrystallization?
During recrystallization, impurities are removed as the compound is dissolved and then slowly cooled to allow for the formation of pure crystals. As a result, the melting point of the compound should increase after recrystallization because the presence of impurities lowers the melting point of the compound.
How is the melting point of an impure compound expected to change with recrystallization?
The melting point of an impure compound is expected to decrease with recrystallization. This is because impurities disrupt the crystal lattice structure, causing a broader melting point range. Recrystallization removes impurities, resulting in a purer compound with a higher melting point.
What is the recrystallization temperature of steel?
It is 0.45 times the melting point of the metal.
What becomes solid above the melting point?
assuming it is its own melting point NOTHING which is why its a MELTING point
Is the temperature of the stiffer mantle above of below its melting point?
is the temperature if the stiffer mantle above or below its melting point
What is the melting temperature of titanium?
Titanium has a high melting point of 3135°F (1725°C). This melting point is approximately 400°F above the melting point of steel and approximately 2000°F above that of aluminum.
What becomes a solid above the melting point?
The melting point is the temperature which a material, element or mixture, changes from the solid to a liquid. Therefore, all liquids become solids above the melting point.
How can information about the melting point and boiling point of matter help you know its states?
If the temperature is below the melting point, you know it is in the solid state. If the temperature is below the boiling point, and above the melting point, you know it is a liquid. If the temperature is above the boiling point, you know it is a gas, etc. (Note: melting point is the same as freezing point).
Is the stiffer mantle above or below the melting point?
is the temperature if the stiffer mantle above or below its melting point
Why Iodine melting point is above room temperature?
Iodine melting point is above room temperature because its vapor pressure is less than one atmosphere.
How do you make molten aluminum?
Heat it up to above 660.32 °C (melting point)
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
