Question

11) The name given to an aqueous solution of HNO₃ is

A) nitric acid

B) nitrous acid

C) hydrogen nitrate

D) hydronitrogen acid

E) hyponitric acid

 

12) The conjugate acid of HSO₄^- is

A) SO₄^2-

B) HSO₄

C) H₂SO₄.

D) H₂SO₄^-

E) HSO₃^-

 

13) What is the [OH^-] in a solution that has a [H₃O⁺] = 1 x 10^-6 M?

A)1 x 10^-2 M

B) 1 x 10^-6 M

C)1 x 10^-8 M

D) 1 x 10^-10 M

E) 1 x 10^-12 M

 

14) A solution which has [OH^-] = 4.6x 10^-6 M is

A) acidic

B) basic

C) neutral

 

15) What is the pH of a solution with [H₃O⁺] = 1 x 10^-9 M

A) 1.0 x 10^-5 M

B)-9.0

C) 5.0

D) -5.0

E) 9.0

 

16) Which of the following could be a buffer?

A) NaF

B) HF+NaF

C) HF+H₂O

D) NaF+H₂O

E) NaCl+HF