Question

  

The addition of 0.010 moles of sodium hydroxide to a 1.0 L solution of a buffer which is 1.0 M in acetic acid and 1.0 M in sodium acetate would shift the pH from 4.74 to _________.

               

A buffer ceases to function in pH regulation once one of the components is ___________.

               

The addition of a strong acid/base to a buffer system produces a situation where [H3O+] has changed, and so ___________.

               

The amount of strong acid or base a buffer can neutralize without large pH change is called its ____________.

               

Preparation of a buffer of specific pH is usually accomplished by creating a specific molarity of the acid or base solution, then adding the conjugate salt as a _____________.

               

The mass of ammonium chloride which must be added to 500.0 mL of a 0.100 M solution of ammonium to make a buffer with pH = 9.15, given a Kb of 1.8x10-5, is _____________.

               

Buffers can also be created by ___________ neutralization of an acid or base.

               

The process of ___________ can be used to determine the concentration of a solution of unknown concentration.

               

In a titration, the solution being added is called the ____________.

               

Because of buffering before and after the equivalence point, titration of a weak acid with a ____________ is difficult to monitor.

Answers:

A.            titrant

B.            4.8 g

C.            5.0

D.            buffer capacity

E.            consumed

F.            4.82

G.           partial

H.            produced

I.             weak base

J.             Q < Ka

K.            titration

L.             solid

M.          strong base

N.           Q ≠ Ka

O.          titrand

P.            3.45 g

Answer 1