By titration, 12.5 mL of aqueous H2SO4 neutralized 16.8 mL of 0.015 M LiOH solution. What was the molarity of the aqueous acid solution? Answer in units of M

The molarity of the aqueous acid solution : 0.0101 M

Titration is a procedure for determining the concentration of a solution by reacting with another solution that is known to be concentrated (usually a standard solution). Determination of the endpoint/equivalence point of the reaction can use indicators according to the appropriate pH range  

Acid-base titration formula  

Ma. Va. na = Mb. Vb. nb  

Ma, Mb = acid base concentration  

Va, Vb = acid base volume  

na, nb = acid base valence  (amount of H⁺, OH⁻)

Va=12.5 ml

na = 2 (H₂SO₄⇒2H⁺+SO₄²⁻⇒2 ion H⁺)

Mb=0.015

Vb=16.8 ml

nb = 1(LiOH⇒Li⁺+OH⁻⇒1 ion OH⁻)

The molarity of the acid(Ma) :

b is the correct answer

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