Answer:
Concentration of HCl is 1.2054 M
Explanation:
Acid-base titration is a type of qualitative analysis in which the concentration of the unknown acid/base is determined by treating it with a known concentration of base/acid. Indicators are used to determine the end point or the equivalence point (when all the acid/base is neutralized by base/acid).
At the end point,
Moles of acid = Moles of base
Since,
Molarity of a solution is given by the moles of solute per liter of the solution
i.e.,
Molarity = moles of solute / volume of solution (in L)
moles = Molarity * Volume
moles = M * V
M₁V₁ ( acid )= M₂V₂( base )
Where,
M₁ is the molarity of the acid
V₁ is the volume of the acid
M₂ is the molarity of the base
V₂ is the total volume of the base
From the question,
M₁ = ?
M₂ = 0.100 M
V₁ = 10.00 mL
V₂ = 120.54 mL
Using the above mentioned formula
M₁V₁ ( acid )= M₂V₂( base )
M₁ * 10.00mL = 0.100 M * 120.54 mL
M₁ = 1.2054 M
Hence, the concentration of of HCl is 1.2054 M
