Answer : The mass of required is 9.3092 grams.
Explanation :
First we have to calculate the mass of solution.
Now we have to calculate the mass of acetic acid.
As we are given that the 58.0 % acetic acid by mass. That means, 58.0 grams of acetic acid present in 100 grams of solution.
As, 100 g of solution contains 58.0 g of acetic acid
So, 26.625 g of solution contains of acetic acid
Now we have to calculate the moles of acetic acid.
Molar mass of acetic acid = 60 g/mole
Now we have to calculate the moles of .
The balanced chemical reaction is,
From the balanced reaction we conclude that,
As, 2 moles of react with 1 moles of
So, 0.257 moles of react with moles of
Now we have to calculate the mass of .
Molar mass of = 74 g/mole
Therefore, the mass of required is 9.3092 grams.