Which of the following statements about acids and bases are true? acetic acid is a strong acid. a strong acid has a weak conjugate base. a brønsted base is a proton acceptor. bases need not contain –oh directly; instead, they can increase the concentration of –oh by deprotonating water.

A strong acid has a weak conjugate base;

A Brønsted base is a proton acceptor;

Bases need not contain –OH directly; instead, they can increase the concentration of –OH by deprotonating water.

Explanation:

Acetic acid (CH3COOH) is an oxyacid, and it's deprotonating occurs in equilibrium. The equilibrium constant for this acid is Ka = , pKa will be

pKa = -logKa = 4.74

So, for higher values of pKa, less strong is the acid.

For the theory of conjugation seesaw, it must have been an equilibrium if the acid and it's the conjugate base. A strong acid has a weak conjugate base, and a weak acid has a strong conjugate base.

For the theory of Brønsted-Lowry, an acid is a proton donator, and a base is a proton acceptor, but they don't need to have and directly, they can increase their concentration by deprotonating water.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o