25.0 mL of a weak base is titrated with 0.708 M solution of HCl. The equivalence point is reached when 13.0 mL of HCl is added. What is the concentration of the original 25.0 mL weak base solution?

You are given a package of chemical material to make an identification. The only known information about this package is that it is a monoprotic acid. You dissolved 1.0 g of the acid into 100 mL of water and titrated it with 0.1 M NaOH solution. The equivalence point was found after titrating 118.4 mL NaOH solution. What is this unknown acid?

What is the pH at the equivalence point in the titration of a 27.6 mL sample of a 0.314 M aqueous hypochlorous acid solution with a 0.434 M aqueous barium hydroxide solution?   PH=

A 2.0 L solution has a NaCl concentration of 1.5 M. What is the NaCl concentration of the solution after 2.0L of pure water is added?

A student titrated 30.0 mL of HNO3 with 0.0500 M of NaOH. The titration requires 45.50 mL of 0.0500 M NaOH to reach the equivalence point. Calculate the concentration in moles/L of the HNO3, or [HNO3] = ? Write an equation for the chemical reaction first, then do the stoichiometric calculations.

A 0.2897-g sample of an unknown monoprotic acid is dissolved in water and titrated with standardized barium hydroxide. The equivalence point in the titration is reached after the addition of 28.65 mL of 6.189×10-2 M barium hydroxide to the sample of the unknown acid. Calculate the molar mass of the acid.

Titrations (weak acid/strong base)

A 27.3 mL sample of a 0.454 M aqueous hydrofluoric acid solution is titrated with a 0.493 M aqueous barium hydroxide solution. What is the pH at the start of the titration, before any barium hydroxide has been added? pH =

How many moles of acetic acid are present in this buffer?   How many moles of sodium acetate are in the buffer?

A 0.328 g sample of an unknown monoprotic acid, HA, is dissolved in water and titrated with a standardized 0.1261M NaOH.  If 28.10 mL of the basic solution is required to reach the equivalence point, calculate the molar mass of the acid.