<u>Answer:</u> The concentration of sulfate ions in the solution is
<u>Explanation:</u>
To calculate the number of moles for given molarity of solution, we use the equation:
.......(1)
<u>For barium ions:</u>
Molarity of solution = 0.00100 M
Volume of solution = 5.00 mL
Putting values in equation 1, we get:
The chemical equation for the ionization of barium sulfate follows:
By Stoichiometry of the reaction:
1 mole of barium ions precipitate 1 mole of sulfate ions
So, moles of barium ions will precipitate moles of sulfate ions
Now, calculating the molarity of sulfate ions by using equation 1:
Moles of sulfate ions = moles
Volume of solution = 56.1 mL
Putting values in equation 1, we get:
Hence, the concentration of sulfate ions in the solution is