# if the mole fractionof sulfuric acid (H2SO4) in an aqueous solitioin is 0.325, what is the percent by mass of H2SO4?

## XH2SO4 = 0.325

XH2O = 1-0.325 = 0.675

XH2SO4 = mols H2SO4/total mols.

1 mol H2SO4 = 98 grams.

0.325 mol H2SO4 = 0.3 x 98 = 31.85g H2SO4 in 0.675 x 18 = 12.15 g H2O

Total mass = 12.15 + 31.85 = 44.0 g

% H2SO4 = (g H2SO4/total g)*100 =

(31.85/44)*100 = ?

## Actually, I have the same question in the book but i didn't know how to solve it, so I was searching and I found this website. Thank you very much and BYE

## Well, if the mole fraction of sulfuric acid (H2SO4) is 0.325, then we can say that it's pretty mole-icious! As for the percent by mass of H2SO4, let's solve this in a humorous and informative way.

To find the mass percent, we first need to find the moles of water. However, since we're dealing with a mole fraction of sulfuric acid, I would advise you to do the mole math and calculate the moles of water that way. After all, a mole is a mole, no matter how you fraction it!

Once you determine the moles of water, you can multiply it by the molar mass of water to get the mass of water. From there, you can subtract the mass of water from the total mass of the solution to obtain the mass of H2SO4. Finally, to determine the percent by mass, divide the mass of H2SO4 by the total mass of the solution and multiply by 100.

So, juggling all these mole-orful calculations, you'll be able to find the percent by mass of H2SO4! Keep your chemical hat on tight and calculat-o-mole away!

## To determine the percent by mass of H2SO4 in the aqueous solution, we need to use the mole fraction of H2SO4 and the molar mass of H2SO4. Here's how you can calculate it:

1. Find the mole fraction of H2SO4 in the aqueous solution:

The mole fraction (X) is calculated by dividing the moles of the component of interest by the total moles of all components in the solution. In this case, the mole fraction of H2SO4 (XH2SO4) is given as 0.325.

2. Calculate the molar mass of H2SO4:

H2SO4 consists of two hydrogen (H) atoms, one sulfur (S) atom, and four oxygen (O) atoms.

The atomic masses are: H = 1.008 g/mol, S = 32.06 g/mol, and O = 16.00 g/mol.

Molar mass of H2SO4 = (2 * 1.008 g/mol) + (32.06 g/mol) + (4 * 16.00 g/mol) = 98.09 g/mol.

3. Calculate the percent by mass of H2SO4:

The percent by mass is the mass of H2SO4 divided by the total mass of the solution, multiplied by 100.

Percent by mass of H2SO4 = (XH2SO4 * Molar mass of H2SO4) / Total mass of solution * 100.

However, to calculate the total mass of the solution, we need additional information about the mass of the solution or the mass of the solvent and mass of solute.

If you have the mass of the solution or the mass of the solvent and solute, you can provide it, and I can help you complete the calculations.