Calculate the mass of HCl required to prepare 2.5 liters of a 0.08 molar solution of HCl.
H
1.01
Hydrogen
17
Cl
35.45
Chlorine
How many moles HCl do you need? That is moles = M x L = ??
Then moles = grams/molar mass. Solve for grams.
To calculate the mass of HCl required to prepare the solution, we need to use the formula:
Mass = Molar mass x Volume x Molarity
Molar mass of HCl = (1 x 1.01) + (1 x 35.45) = 36.46 g/mol
Volume of solution = 2.5 liters
Molarity of solution = 0.08 mol/L
Now, let's substitute the values into the formula:
Mass = 36.46 g/mol x 2.5 L x 0.08 mol/L
Mass = 7.29 grams of HCl.
Therefore, you would need 7.29 grams of HCl to prepare 2.5 liters of a 0.08 molar solution of HCl.