What simplifying assumptions do we usually make in working problems involving eq

Question

What simplifying assumptions do we usually make in working problems involving equilibria of salts of polyprotic acids? Why are they usually valid? Answer by selecting all true statements.

If the two ionization constants are not very different the approximations are valid.

Nearly all of the OH- comes from the first ionization.

Nearly all of the OH- comes from the second ionization.

The approximations are usually valid because the first ionization constant is usually smaller than the second ionization constant.

The approximations are usually valid because the first ionization constant is usually much larger than the second ionization constant.

The concentration of OH- and the conjugate acid of the weak base (the anion of the salt) are approximately equal.

Explanation / Answer

1,3,5,6 are true

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