1. Describe the relative quantities of the undissociated acid ( HA ) and the dis

Question

1. Describe the relative quantities of the undissociated acid (HA) and the dissociated acid (A-), H+ and OH- through out the titration at

a. before pH at half quivalence point

b. at half equivalence point

c. after half equivalence point but before equivalence point

d. at equivalence point

e. after equivalence point

1. Describe the relative quantities of the undissociated acid (HA) and the dissociated acid (A-), H+ and OH- through out the titration at a. before pH at half quivalence point b. at half equivalence point c. after half equivalence point but before equivalence point d. at equivalence point e. after equivalence point

Explanation / Answer

a. before pH at half quivalence point

[HA] [H+] [A-] and [OH-]

pH is high, concentratino of [H+] is high, OH is low, [A-] is equal to that of [A-] [HA] here is the minimum

b. at half equivalence point

[HA] [H+] [A-] and [OH-]

pH is getting higher, [HA] is getting higher, [OH-]<[H+] but increasing and [A-] is decreasing

c. after half equivalence point but before equivalence point

pretty similar to b, jut increasing pH, [OH-] increasing, but still lower

d. at equivalence point

[OH-] = [H+]

[HA] increases and a [A-] is free(all H+ reacted)

e. after equivalence point

[OH-] levels are higher, and it will get basic and basic as you ad NaOH

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