Question

In this experiment, you will identify an unknown weak acid by titration with standardized base. This lab takes place in two parts, which you can do in either order:

1. Standardization of a sodium hydroxide solution to find its actual concentration (approximately 0.1 M)

2. Titration of the weak acid with the sodium hydroxide solution.

You won't know if your acid is monoprotic (HA), diprotic (H₂A), or triprotic (H₃A).

a.) Indicate how you would differentiate between the three different types of acids based on what you observe from your titration curve. Use rough sketches of curves (which you can draw by hand and upload) for the different types of acids to justify your answer.

b.) Which step in your calculations for this experiment will you change to determine the correct molar mass of your acid if it is polyprotic?

Answer 1

From the muunber fcauvan h e te) pt sint ph in ti HA Hene

PH val.QWaolt → ecewed 늉.ie鳥q-total-MyA herr emivalame Co A- χレ

Phen