$$[H_3O^+] = 8.6 \times 10$$^{-5}$$ M

Question 1

Which of the following is a Bronsted-Lowry base but NOT an Arrhenius base?

Accepted Answer

NH$$_3$$

Question 2

Which of the following anions can act as both a Bronsted-Lowry acid and a Bronsted-Lowry base?

Accepted Answer

HSO$$_4^-$$

Question 3

What is the conjugate base of HSO$$_4^-$$?

Accepted Answer

SO$$_4$$^{2-}$$

Question 4

What is the conjugate acid of CH$$_3NH$_2$$?

Accepted Answer

CH$$_3NH$_3^+$$

Question 5

In the reaction: CH$$_3CO$_2H(aq) + NH$_3(aq$$) $$\rightleftharpoons NH$_4^+(aq) + CH$_3CO$_2^-(aq$$), which is the Bronsted-Lowry acid?

Accepted Answer

CH$$_3CO$_2H$$

Question 6

Which of the following species behaves as a strong acid in aqueous solution?

Accepted Answer

HNO$$_3$$

Question 7

Which acid has the stronger conjugate base: H$$_2CO$_3 or $$HSO$$_4^-$$?

Accepted Answer

H$$_2CO$_3$$

Question 8

If you mix equal concentrations of HF(aq) and NH$$_3(aq$$), which direction will the reaction proceed?

Accepted Answer

To the right, forming NH$$_4^+$$ and F$$^-$$

Question 9

Calculate the pH of a solution with $$[H_3O^+] = 2.0 	imes 10$$^{-3}$$ M.

Accepted Answer

$$pH = 2.70$$

Question 10

A solution has $$[OH^-] = 1.0 	imes 10$$^{-7}$$ M. What is the pH?

Accepted Answer

$$pH = 7.00$$

Question 11

Which of the following solutions is basic?

Accepted Answer

$$[OH^-] = 0.010 M$$

Question 12

Which of the following is the conjugate acid of HCO$$_3^-$$?

Accepted Answer

H$$_2CO$_3$$

Question 13

If $$[H_3O^+] = 1.0 	imes 10$$^{-7}$$ M$$ and $$[OH^-] = 1.0 	imes 10$$^{-7}$$ M$$, the solution is:

Accepted Answer

Neutral

Question 14

Which of the following reactions will proceed to the right if mixed in equal concentrations?

Accepted Answer

HF(aq) + NH$$_3(aq$$) $$\rightarrow NH$_4^+(aq) + F$^-(aq)$$

Question 15

Which of the following is a strong base in aqueous solution?

Accepted Answer

O$$^{2-}$$

Question 16

Calculate the pH for $$[OH^-] = 4.0 	imes 10$$^{-3}$$ M.

Accepted Answer

$$pH = 11.60$$

Question 17

Which of the following is the conjugate base of H$$_2PO$_4^-$$?

Accepted Answer

HPO$$_4$$^{2-}$$

Question 18

A solution has $$[H_3O^+] = 1.5 	imes 10$$^{-3}$$ M. What is its pH?

Accepted Answer

$$pH = 2.82$$

Question 19

Which of the following pairs are conjugate acid-base pairs?

Accepted Answer

NH$$_4^+$$ and NH$$_3$$

Question 20

Which of the following solutions is acidic?

Accepted Answer

$$[H_3O^+] = 8.6 	imes 10$$^{-5}$$ M

Aqueous Equilibria: Acids and Bases – Guided Study Notes

Guida di studio - Domande di pratica