A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane?
I figured the equation would be:
___ M Hexane x 10
Divided by
30
=Mole fraction of Hexane?
To determine the mole fraction of hexane (C6H14) in the solution, we need to calculate the moles of hexane and the total moles of the solution.
First, let's calculate the moles of hexane:
Moles of hexane = mass of hexane / molar mass of hexane
The molar mass of hexane (C6H14) can be calculated by adding the atomic masses of its elements:
Molar mass of hexane = (6 * atomic mass of carbon) + (14 * atomic mass of hydrogen)
Using the atomic masses of carbon (12.01 g/mol) and hydrogen (1.008 g/mol), we get:
Molar mass of hexane = (6 * 12.01) + (14 * 1.008) g/mol
Now, let's calculate the moles of hexane:
Moles of hexane = 10.0 g hexane / molar mass of hexane
Next, let's calculate the total moles of the solution:
Total moles of the solution = moles of pentane + moles of hexane + moles of benzene
Since all the components have the same mass (10.0 g), the moles of pentane and benzene can be calculated in the same way as the moles of hexane.
Finally, we can calculate the mole fraction of hexane:
Mole fraction of hexane = moles of hexane / total moles of the solution
Perform these calculations, and you will find the mole fraction of hexane in the solution.
To find the mole fraction of hexane in the solution, you first need to calculate the moles of hexane and the total moles of all the components in the solution.
Step 1: Calculate the moles of hexane (C6H14):
Moles of hexane = mass of hexane / molar mass of hexane
The molar mass of hexane (C6H14) can be calculated by summing the atomic masses of carbon and hydrogen:
Molar mass of hexane (C6H14) = (6 * atomic mass of carbon) + (14 * atomic mass of hydrogen)
The atomic masses of carbon (C) and hydrogen (H) are respectively 12.01 g/mol and 1.01 g/mol.
Molar mass of hexane = (6 * 12.01 g/mol) + (14 * 1.01 g/mol)
Step 2: Calculate the moles of hexane:
Moles of hexane = mass of hexane / molar mass of hexane
Moles of hexane = 10.0 g / calculated molar mass of hexane
Step 3: Calculate the total moles of all the components:
To calculate the total moles, you need to consider the moles of pentane (C5H12) and benzene (C6H6) as well.
Moles of pentane (C5H12) = mass of pentane / molar mass of pentane
Moles of pentane = 10.0 g / molar mass of pentane
Moles of benzene (C6H6) = mass of benzene / molar mass of benzene
Moles of benzene = 10.0 g / molar mass of benzene
Total moles of all components = moles of hexane + moles of pentane + moles of benzene
Step 4: Calculate the mole fraction of hexane:
Mole fraction of hexane = moles of hexane / total moles of all components
By following these steps, you will be able to calculate the mole fraction of hexane in the solution.
Nope.
figure the moles of each.
molefraction=moleshezane/(molesHexane+molebenzene+molespentane)