Suppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read the base titrant volume as 2.04 mL. After running the titration and reaching the endpoint, you read the base titrant volume as 20.95 mL. 1. What volume, in mL, of base was required for the titration?
2.Calculate the mass percent of a vinegar solution with a total mass of 96.92 g that contains 2.28 g of acetic acid.

1) 18.91 mL

2) 2.35 %

Explanation:

1. The volume of base that was required is equal to the difference between the reading at the end of the titration and the reading at the beginning:

2. The mass percent can be written as:

For this problem:

We input the data and calculate the mass percent:

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.