Page 24 - E-Modul Titrasi Asam Basa berbasis guided discovery Learning
P. 24
E-MODUL TitrasiAsam dan Basa
Berbasis Guided Discovery Learning
Lembar Kegiatan 1
1. 10 ml HCl yang tidak diketahui konsentrasinya dititrasi oleh larutan NaOH 0,1M.
Pada titik akhir titrasi ternyata rata-rata volume NaOH 0,1M yang digunakan adalah
12,52 ml. Hitunglah konsentrasi HCl yang dititrasi ?
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
................................................................................................................................
2. Titrasi dihentikan apabila sudah mencapai titik akhir titrasi
a. Apa yang dimaksud dengan titik ekuivalen dan titik akhir titrasi asam basa?
b. Bagaimana cara menentukan titik akhir titrasi antara 25 ml larutan NaOH 0,1M
dengan larutan HCl 0,1M?
c. Indikator apa yang paling tepat digunakan untuk titrasi tersebut?
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
......................................................................................................................................
3. Larutan CH3COOH dititrasi dengan NaOH 0,5 M dengan indikator PP, diperoleh
data sebagai berikut :
Percobaan Volume Volume NaOH 0,1
CH3COOH (ml) M yang terpakai
(ml)
1 25 20,0
2 25 19,9
3 25 20,1
Berdasarkan data tersebut,konsentrasi CH3COOH tersebut adalah
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
4. Diketahui cuka makan dijual dipasar memiliki kadar 15%(Mr=60) dan volume asam
cuka dalam kemasan 100 ml. Berdasarkan data tersebut hitunglah konsentrasi dari
3
asam cuka tersebut jika massa jenis asam cuka 1,049 g/cm ?
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
SILAHKAN KLIK UNTUK LEMBAR JAWABAN
Siswa Kelas XI SMA / MA 19
