00.praktikum 3 (ptk2).xlsx

1 pembuatan larutana naoh a. [naoh] buat 0,5 N 0,5 grk/ltr 0.5 BM naoh b. Vlm Naoh yng dinginkan 0.3 c. Brt Naoh [naoh]xvxbm 6 d. Vlm rata2 as oksalat 27.1 e. N as. Oksalat yn dgunakan 0.1 VnaohxN naoh x f =V as. Oksalat x N as. Oksalat f 1.084 f. N naoh yng sbenarnya = [Naoh]x f 0.542 2. pembuatan larutan as. Asetat (ch2cooh) konsentrasi 2N a. x=NxVXBM/10xkxL x 28.652543182 b. perhitungan penegnceran V1*N1=V2*N2 dr As. Asetat 2N - Chcooh 0,8 N;0,6N;0,5N;0,4N tbl. 1 V2 N2 V1 N1 100 0.8 40 2 100 0.6 30 2 100 0.5 25 2 100 0.4 20 2 3. Standarisasi Larutan As. Asetat mula2 a. V naoh rata2 0.8 0.6 0.5 0.4 b. Nch3coohxVch3cooh=NnaohxVnaoh tbl. 2 N naoh V naoh 0.8 0.542 7.2 0.6 0.542 5.5 0.5 0.542 5.2 0.4 0.542 4.15

7.2 5.5 5.2 4.15 Nch3cooh 0.780 0.596 0.564 0.450

Vch3cooh 5 5 5 5

4. Konsentrasi Larutan ch3cooh stlah keseimbangan a. Titrasi larutan asam astat dngn naoh - untuk 0,8 Nch3coohxVch3cooh=NnaohxVnaoh tbl. 3 N naoh V naoh Nch3cooh Vch3cooh 0.5420 6.0000 0.650 5 0.5420 5.8500 0.634 5 0.5420 4.1000 0.444 5 0.5420 3.9500 0.428 5 b. Titrasi larutan asam astat dngn naoh+nacl - untuk 0,8 Nch3coohxVch3cooh=NnaohxVnaoh tbl. 4 N naoh V naoh Nch3cooh Vch3cooh 0.542 6.900 0.748 5 0.542 5.600 0.607 5 0.542 4.500 0.488 5

40

vlm naoh 5 5 5

N V BM n k L Data [as. Asetat] 0.8 0.6 0.5 0.4 [as. Asetat] 0.8 0.6 0.5 0.4 [as. Asetat] 0.8 0.6 0.5 0.4 V naoh rata2

N naoh rata2

0.542

4.000

0.434

5

5. Konsentrasi larutan as. Acetat Ch3cooh dalam n-Hxane a. N ch3cooh n-Hexane = N ch3cooh - (Nch3cooh n-Hexane setimbang) b. N ch3cooh n-Hexane + Nacl = Nch3cooh - (Nch3cooh n-hexane + Nacl setimbang) tbl. 5 N ch3cooh Nch3cooh n-hexane setimbang N ch3cooh Nch3cooh n-Hexane n-hexane + Nacl N ch3cooh setimbang n-Hexane + Nacl 0.780 0.650 0.130 0.748 0.033 0.596 0.634 0.038 0.607 0.011 0.564 0.444 0.119 0.488 0.076 0.450 0.428 0.022 0.434 0.016 Cx Cy 6. Mencari pers. Garis dngn regresi linear a. Dari persamaan log Cy = n Log Cx + log n/k tbl. 6 cx cy y= log cy x= log Cx x^2 0.8 0.650 0.130 -0.886 -0.187 0.035 0.6 0.634 0.038 -1.421 -0.198 0.039 0.5 0.444 0.119 -0.924 -0.352 0.124 0.4 0.428 0.022 -1.664 -0.368 0.136 jumlah -4.894 -1.105 0.334 A 1.145 B -0.907 N y=ax+b k 9.247 0.8 -1.121 0.6 -1.134 0.5 -1.310 0.4 -1.329 tbl. 7 0.8 0.6 0.5 0.4 A

-0.194 N 0.8 0.6 0.5 0.4

cx 0.748 0.607 0.488 0.434 jumlah

cy 0.033 0.011 0.076 0.016 B

y=ax+b -1.615 -1.598 -1.579 -1.569

7. Mencari kesalahan Relatif Hasil Percobaan a. Tanpa penambahan NaCl Kesalahan relatif = |ypers-yperc/ypers|x100% x y pers yperc -0.187 -1.121 -0.886 -0.198 -1.134 -1.421 -0.352 -1.310 -0.924 -0.368 -1.329 -1.664

y= log cy -1.488 -1.965 -1.120 -1.789 -6.362 -1.640

x= log Cx -0.126 -0.217 -0.312 -0.363 -1.018

x^2 0.016 0.047 0.097 0.132 0.292

a=n b=log a/k

k

-8.460

kesalahan relatif 20.990 % 25.333 % 29.521 % 25.206 % 25.263 %

b. Dengan penambahan NaCl Kesalahan relatif = |ypers-yperc/ypers|x100% x y pers yperc -0.126 -1.615 -1.488 -0.217 -1.598 -1.965 -0.312 -1.579 -1.120 -0.363 -1.569 -1.789 jmlh

kesalahan relatif 7.888 % 22.988 % 29.089 % 13.989 % 18.489 %

vlm as. Oksalat 27 23.5 30.8

2 250 60.05 1 99.8 1.05

5 5 5 5

V as. Asetat 5 5 5 5

5 5 5 5

V Nacl+as. Acetat 5 5 5 5

5 5 5 5

V as. Asetat 5 5 5 5

7.3 5.6 5.1 4.1

V Naoh 7.1 5.4 5.3 4.2

6.8 5.5 5.5 4.4

V Naoh 7 5.7 3.5 3.6

4.5 5.7 3.3 3.9

V naoh 7.5 6 4.9 4

0.8 0.6 0.5 0.4

6 5.85 4.1 3.95

4.975

0.8 0.6 0.5 0.4

6.9 5.6 4.5 4

5.25

y -0.400

x.y 0.165 0.281 0.325 0.613 1.385

x -0.187 -0.198 -0.352 -0.368

-0.350

-0.300

-0.250

-0.2

y -0.886 -1.421 -0.924 -1.664

Chart Title -0.400

x.y 0.188 0.426 0.349 0.649 1.612

x -0.126 -0.217 -0.312 -0.363

y -1.488 -1.965 -1.120 -1.789

-0.350

-0.300

-0.250

-0.200

-0.

y

300

-0.250

-0.200

0.000 -0.150 -0.200 -0.400 -0.600 -0.800 -1.000 -1.200 -1.400 -1.600 -1.800

Chart Title -0.250

-0.200

-0.150

0.000 -0.100 -0.500 -1.000 -1.500 -2.000 -2.500