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.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.