a-0451-g-sample-of-an-unknown-monoprotic-acid-is-titrated-with-0150-m-naoh-the-r

Question

A 0.451-g sample of an unknown monoprotic acid is titrated with 0.150 M NaOH. The resulting titration curve is shown here. Determine the molar mass and pK_a of the acid.

Titration curve showing pH change as NaOH is added to a monoprotic acid sample.

Accepted Answer

pK_a= 7.8; molar mass = 85.9 g/mol

Answer

pK_a= 6.5; molar mass = 72.3 g/mol

Answer

pK_a= 4.2; molar mass = 98.1 g/mol

Answer

pK_a= 10.1; molar mass = 68.8 g/mol

A 0.451-g sample of an unknown monoprotic acid is titrated with 0.150 M NaOH. The resulting titration curve is shown here. Determine the molar mass and pKa of the acid.

A 0.451-g sample of an unknown monoprotic acid is titrated with 0.150 M NaOH. The resulting titration curve is shown here. Determine the molar mass and pK_a of the acid.