6cAc0931010109H1047410568093pH568100005160109101
cHAc

3100mL007molL1HOAc和007molL1NaOAc溶液
634
fH10

474

00710474007
pH474加入1mL60molL1HCl100007161cAc1011011H104741011036313101pH3631000071613101101
cHAc

计算结果说明cacb越大且二者的比值趋向1时溶液的pH值变化小溶液的缓冲性能好412当下列溶液各加水稀释十倍时，其pH有何变化计算变化前后的pH。’1010molL1HCI；2010molL1NaOH；3010molL1HOAc；4010molL1NH3H20010mo1L1NH4Cl。解：1〔H〕010molL1pH1001稀释后〔H〕0010molLpH2002〔OH〕010molL1pOH1000pH1301稀释后〔OH〕0010molLpOH200pH12003
cKa0101047410Kwc
H

Ka

01010510474
01010474134103molL1pH28700110510474
稀释后cKa0011047410KwcKa
H

00110474424104molL1pH337
a
4H
K
pH926稀释后
ca011092610926molL1cb01
H10

926

00110926001
pH926413将具有下述pH的各组强电解质溶液，以等体积混合，所得溶液的pH各为多少734
f1pH100pH200；2pH100pH500；3pH1300pH100；4pH1400pH100；5pH500pH900。解：1
H10

1
V102V00552V
pH126
2
H10

1
V105V0052V
pH130
3pH1300〔H〕1013〔OH〕101pH100〔H〕101HOH→H2OpH7004pH1400〔OH〕10pH100〔H〕101
01VOH10V2V

045
pH1365
5pH500〔H〕105pH900〔H〕109〔OH〕105HOH→H2OpH700414欲配制pH100的缓冲溶液1L。用了160molL1氨水420mL，需加NH4C1多少克解：设需加NH4C1m克
cNH31010
160042067210m10144。53497410672
m654g415欲配制500mLpH50的缓冲溶液，用了6molL1HOAc34mL，需加NaOAc3H2O多少克解：设需加NaOAc3H2Om克
6003410510474050m13608050
m2021g416需配制pH52的溶液，应在1L001molL1苯甲酸中加人多少克苯甲酸钠解：需加苯甲酸钠m克834
f221105。104。
001m14409
m142g417需要pH41的缓冲溶液，分别以HOAc十NaOAc和苯甲酸苯甲酸钠HBNaB配制。试求NaOAc／HOAc和r