Question

acid base titration lab....

Which substance, the hot sauce or ketchup, contained the most acid per gram?

Why was it important to know the exact concentration of the base used in the titration?

***Lab consisted of a 20 mL DH2O AND 1.5 g hotsauce mixture for trial 1, and 20 mL DH20 and 1.5 g ketchup mixture for trial 2.

Answer 1

This is a titration experiment where you need to determine the amount of acid present in a mixture of hot sauce as well as ketchup.

The amount of base used in the titration determines the amount of acid present in the titrand.

Assume that the conc of base used as the titrant is 'x' M and the volume of titrant used to reach the equivalence point is 'y' L.

So, moles of base used = Molarity*Volume = x*y

Assuming the acid present in the sauce mixtures is monoprotic,

Moles of base used = Moles of acid present

Thus, it is important that the volume of base used should be known exactly.

Hope this helps !