C.
Alat,
Bahan, dan Cara Kerja
1. Alat
a. Pipet tetes
b. Tabung reaksi
c. Rak tabung reaksi
d. Label
e. Stopwatch
2. Bahan
a.
Pita Mg 6 potong 2 cm
b.
Larutan HCL 1M, 1.2M,
1.4M, 1.6M, 1.8M, 2M
3. Cara
Kerja
a. Menyediakan
6 potong pita Mg 2 cm
b. Menyediakan larutan HCL 1M, 1.2M,
1.4M, 1.6M, 1.8M, 2M
c. Memindahkan
10 ml larutan HCL 2M ketabung reaksi dan memasukkan 1 potong
pita Mg kemasing-masing tabung reaksi
d. Mencatat waktu mulai memasukkan pita sampai reaksi selesai (pita habis)
e. Menggambar grafik konsentrasi terhadap 1/t dan
(konsentrasi) 2 terhadap 1/t
f. Menentukan tingkat reaksinya
D.
Hasil dan Analisis Hasil Pengamatan
1. Hasil Pengamatan
Tabel3.1Hasil Pengamatan
Tingkat Reaksi 1
No
|
M
(x)
|
T
(s)
|
1/t
(y)
|
x .
y
|
x2
|
y2
|
x2
. y2
|
1
|
1
|
102,24
|
978
x10-5
|
978
x10-5
|
1,00
|
9,56662 x10-5
|
9,5666155
x10-5
|
2
|
1,2
|
96,
65
|
1035 x10-5
|
1242 x10-5
|
1,44
|
10,70524 x10-5
|
15,4155412
x10-5
|
3
|
1,4
|
68,
29
|
1464 x10-5
|
2050 x10-5
|
1,96
|
21,44301 x10-5
|
42,0283022
x10-5
|
4
|
1,6
|
58,
64
|
1705 x10-5
|
2729 x10-5
|
2,56
|
29,08118 x10-5
|
74,4478298
x10-5
|
5
|
1,8
|
54,
27
|
1843 x10-5
|
3317 x10-5
|
3,24
|
33,95317 x10-5
|
110,008278x10-5
|
6
|
2
|
43,
10
|
2320 x10-5
|
4640 x10-5
|
4,00
|
53,83261 x10-5
|
215,330451x10-5
|
∑
|
9
|
423,19
|
9345 x10-5
|
14955 x10-5
|
14,20
|
158,58183 x10-5
|
466,797018x10-5
|
Sumber : Laporan Sementara
Tabel 3.2 Hasil Pengamatan
Tingkat Reaksi2
No
|
x2
|
y2
|
x4
|
y4
|
x4
. y4
|
1
|
1,00
|
9,5666
x10-5
|
1,0000
|
91,52013
x10-10
|
91,52013
x10-10
|
2
|
1,44
|
10,7052
x10-5
|
2,0736
|
114,60210
x10-10
|
237,63891
x10-10
|
3
|
1,96
|
21,44301
x10-5
|
3,8416
|
459,80273
x10-10
|
1766,37818
x10-10
|
4
|
2,56
|
29,08118
x10-5
|
6,5536
|
845,71523
x10-10
|
5542,47935
x10-10
|
5
|
3,24
|
33,9531 x10-5
|
10,4976
|
1152,81791
x10-10
|
12101,82126
x10-10
|
6
|
4,00
|
53,83261
x10-5
|
16,0000
|
2897,95021
x10-10
|
46367,20334
x10-10
|
∑
|
14,20
|
158,5818
x10-5
|
39,9664
|
5562,40831
x10-10
|
66107,04117
x10-10
|
Sumber : Laporan Sementara
2. Analisis Hasil Pengamatan
b. y = a + b x
=-267x10-6 + 8,15075639x10-6x
= -0,000258891
= -258,891 x 10-6
c. Mencari simpangan deviasi (SD1)
d. Mencari garis linier tingkat II
e. Titik potong
x = 0 = a2 + b2 x
y = 0 = (-0,0729451
x 10-5)+ (2,43322 x 10-5)
9
= 21,8260349
x 10-5
f. Simpangan Deviasi (D2)
= 72,7325663 x 10-5
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