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WorksheetsWhat Is a Buffer
Total questions: 9
Worksheet time: 13mins
The buffer solution is able to maintain pH by some events, except . . .
The addition of a little acid
The addition of a little base
Dilution
Addition of water
The addition of excess acid
The following solution mixture which is not buffer is . . .
NaH2PO4 and Na2HPO4
NH3 and (NH4)2SO4
HCOOH and Ba(HCOO)2
H3PO4 and NaH2PO4
NaOH and Ba(HCOO)2
Which of the following statements ARE TRUE about buffer solution?
(you may choose more than one answer)
pH of buffer solution will never change despite addition of small amount of base or acid
Buffer can be made by mixing weak acid and salt of its conjugate base or by mixing weak base with salt of its conjugate acid
Buffer has acid and base components that can work specifically to resist pH change
the closer the ratio of concentration weak acid/base to the concentration of salt of its conjugate base/acid, the less effective the buffer to resist pH change
Which of the following composition or mixture will, in general, form a solution of acidic buffer ?
(you may choose more than one answer)
strong acid + weak base (in excess)
strong base + weak acid (in excess)
weak acid + salt of its conjugate base
weak base + salt of its conjugate acid
strong acid (in excess) + strong base
