Valoración de H3PO4

7/25/2019 Valoracin de H3PO4

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[NaOH] 0.05 [H3PO4]mmol 5

V(ml) [NaOH]mmol [H3PO4]mmol pH(Henderson)

10 0.5 4.5 1.1937574906

20 1 4 1.5459400087

30 1.5 3.5 1.7800232147

40 2 3 1.9719087409

50 2.5 2.5 2.148

60 3 2 2.3240912591

70 3.5 1.5 2.5159767853

80 4 1 2.7500599913

90 4.5 0.5 3.1022425094

95 4.75 0.25 3.426753601

99 4.95 0.05 4.1436351946

99.5 4.975 0.025 4.4468530764

1ra Po de !"#$l$%r$o

&1 7.110!'03 [H] 1.9232799!'005

2 6.320!'08 pH 4.7159575022

3 7.100!'13

3.310!'02 [H] despre*$ando *on*enra*$ones

+ 1.000!'14 pH

[H2PO4] 3.330!'02[H3PO4] 8.954!'05

[HPO4] 1.09!'04

[H2PO4],nal 3.31010!'02

2do %#-er H2PO4(mmol) 5

V(ml) NaOH(005) NaOH HPO4 H2PO4

100.5 0.05 5.025 0.025 4.975

105 0.05 5.25 0.25 4.75

110 0.05 5.5 0.5 4.5

120 0.05 6 1 4130 0.05 6.5 1.5 3.5

140 0.05 7 2 3


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150 0.05 7.5 2.5 2.5

160 0.05 8 3 2

170 0.05 8.5 3.5 1.5

180 0.05 9 4 1

190 0.05 9.5 4.5 0.5

195 0.05 9.75 4.75 0.25

199 0.05 9.95 4.95 0.05199.5 0.05 9.975 4.975 0.025

2do P#no de !"#$l$%r$o

&1 7.110!'03 [H] 2.7693283!'010

2 6.320!'08 pH 9.5576255585

3 7.100!'13

1.986!'02 [H] despre*$ando *on*enra*$ones

+ 1.000!'14 pH

[HPO4] 2.000!'02[H2PO4] 8.703!'05

[PO4] 5.13!'05

[HPO4],nal 1.98617!'02

[NaOH] 0.05 [HPO4]mmol 5

V(ml) [NaOH]mmol NaOH PO4 HPO4

205 10.25 5.25 0.25 4.75

210 10.5 5.5 0.5 4.5

220 11 6 1 4

230 11.5 6.5 1.5 3.5

240 12 7 2 3

250 12.5 7.5 2.5 2.5

260 13 8 3 2

270 13.5 8.5 3.5 1.5

280 14 9 4 1

290 14.5 9.5 4.5 0.5

295 14.75 9.75 4.75 0.25

299 14.95 9.95 4.95 0.05

Para #ando solo en/o PO4 !*eso de NaOHPO4mmol 5

NaOH 0.05

V(ml) NaOH mmolPO4 NaOHmmol pOH pH

300 15 10 '1 15

310 15.5 10.5 '1.0211892991 15.0211892991

320 16 11 '1.0413926852 15.0413926852

330 16.5 11.5 '1.0606978404 15.0606978404

340 17 12 '1.079181246 15.079181246

350 17.5 12.5 '1.096910013 15.096910013

360 18 13 '1.1139433523 15.1139433523370 18.5 13.5 '1.1303337685 15.1303337685

380 19 14 '1.1461280357 15.1461280357


3/12

390 19.5 14.5 '1.1613680022 15.1613680022

400 20 15 '1.1760912591 15.1760912591

21000 1050 1045 '3.0191162904 17.0191162904


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V(ml) pH(Henderso

10 1.19375749

20 1.54594001

30 1.78002321

40 1.97190874

50 2.148

60 2.32409126

70 2.51597679

80 2.75005999

90 3.10224251

95 3.4267536

99 4.14363519

99.5 4.44685308

100.5 4.90014692

105 5.9202464

110 6.24475749

120 6.59694001

2.1197924426698!'005 130 6.83102321

4.6737066605 140 7.02290874

150 7.199160 7.37509126

170 7.56697679

180 7.80105999

190 8.15324251

195 8.4777536

pH 199 9.19463519

4.9001469236 199.5 9.49785308

5.920246399 205 10.8712464

6.2447574906 210 11.1957575

6.5969400087 220 11.547946.8310232147 230 11.7820232

7.0229087409 240 11.9739087


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7.199 250 12.15

7.3750912591 260 12.3260913

7.5669767853 270 12.5179768

7.8010599913 280 12.75206

8.1532425094 290 13.1042425

8.477753601 295 13.4287536

9.1946351946 299 14.14563529.4978530764 300 15

310 15.0211893

320 15.0413927

330 15.0606978

340 15.0791812

350 15.09691

360 15.1139434

2.11830120615554!'010 370 15.1303338

9.6740122865 380 15.146128

390 15.161368400 15.1760913

pH

10.871246399

11.1957574906

11.5479400087

11.7820232147

11.9739087409

12.15

12.3260912591

12.5179767853

12.7520599913

13.1042425094

13.428753601

14.1456351946


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n)

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ar $le


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2

4

6

8


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Valoración de H3PO4

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