Acids and Bases
是非題
(1)
( ) The aqueous solution containing HCl and NaCl is an example of
buffered solution.
( ) H2SO4 and SO42- represent a conjugate acid-base pair.
( ) H2SO4 is a strong acid and completely dissociated to SO42-.
( ) Kw = 1×10-13 at 60oC, In a neutral solution at 60oC, pH <7.
(2)
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選擇題
(1)
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(2)
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(3)
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(4)
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Calculate pH for 1.0×10-9 M NaOH. (A) 5.00 (B) 7.00 (C) 9.00 (D)
none of these
Which one is a conjugate acid-base pair? (A) HF, H2O (B) H2S, S2- (C)
H3O+, OH- (D) NH4+, NH3
HCl is a strong acid, and HF is a weak acid. Arrange H2O, F-, Claccording to their strength as bases: (A) F- > H2O > Cl- (B) Cl- > Fl- >
H2O (C) Cl- > H2O > F- (D) F- > Cl- > H2O
Which of the following combination would act as buffered solutions?
(A) HCl, NaCl (B) CH3COOH, CH3COOK (C) H2S, NaHS (D) H2S,
Na2S
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問答、計算題
(1)
(2)
Calculate the pH and pOH for a solution of 1.0×10-3 M OH- at 25oC.
The pH of a human blood sample was measured to be 7.41. What is the [H+]?
(1)
pH = 11.00, pOH = 3.00
(2)
[H+] = 3.9×10-8 M