Calculating Formality of Solution

To calculate the formality of the given solution, we need to follow the below steps:

Step 1: Calculate the molecular weight of the compound

K2SO4•Al2(SO4)3•24H2O
= (2x39.10) + 32.06 + (2x(27.03+4x32.06)) + (24x18.02)
= 772.38 g/mol

Step 2: Calculate the number of moles of the compound

Number of moles = (20 g/772.38 g/mol)
= 0.0259 moles

Step 3: Calculate the volume of the solution

Volume = 2 L

Step 4: Calculate the formality of the solution

Formality = (Number of moles/Volume)
= (0.0259 moles/2 L)
= 0.0129 F

Therefore, the formality of the given solution is 0.0129 F.

Explanation

The given problem involves the calculation of the formality of a solution. Formality is defined as the number of gram equivalents of solute per liter of solution. To calculate the formality of the solution, we first need to calculate the molecular weight of the given compound. This is done by adding the atomic weights of all the atoms present in the compound.

Once we have the molecular weight, we can calculate the number of moles of the compound using the given mass. The volume of the solution is also given in the problem. Finally, we can calculate the formality by dividing the number of moles by the volume of the solution.

In this case, the given compound is K2SO4•Al2(SO4)3•24H2O. The molecular weight of this compound is calculated by adding the atomic weights of all the atoms present in it. Once we have the molecular weight, we can calculate the number of moles of the compound using the given mass. The volume of the solution is also given in the problem. Finally, we can calculate the formality by dividing the number of moles by the volume of the solution.