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PRAKTIKUM KIMIA
SMK NEGERI 1 BANGKINANGJln.T.Tambusai Telp.(0762) 21310 Fax. (0762) 21310 Bangkinang
TAHUN PELAJARAN 2011/2012
KELAS : XI
STUDY PROGRAM : TPTU, TP, TKJ, TKR
WAKTU : 60 MENIT/GROUP
Judul : ”Indikator Asam Basa Alami”
Praktikan : 1. .......................................................
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I. Tujuan Kegiatan
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II. Dasar Teori
Lengkapi sendiri! (cari referensi dari Buku Paket Kimia, buku kimia lainnya maupun dari
internet! )
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Blog: KIMIA SMK ASYIKE-mail: [email protected]
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III. Alat
a) Lumpang – Alu
b) Sendok Plastik 5 buah
c) Pipet tetes/Suntikan
d) Gelas Kimia
IV. Bahan-bahan:
a) AQUADES
b) ALKOHOL
c) KUNYIT
d) BAYAM MERAH
e) BUNGA MAWAR
MEMBAWA ZAT-ZAT YANG DIDUGA ASAM, BASA DAN NETRAL:
CUKA
AIR JERUK NIPIS/LIMAU
JENIS SABUN MANDI (BERUPA CAIRAN)
Blog: KIMIA SMK ASYIKE-mail: [email protected]
SODA KUE
No Nama Larutan Jumlah
1
2
3
4
5
V. Prosedur Percobaan
1) Siapkan alat dan bahan
2) Teteskan larutan sampel pada masing-masing sendok
3) Gerus bunga mawar dengan menggunakan lumping-alu.
4) Setelah bunga mawar cukup halus, tambahkan alcohol sebanyak 10 ml kemudian gerus
kembali sampai cairan dari gerusan bunga mawar tersebut keluar.
5) Ambil ekstrak cairan dari bunga mawar tersebut pada gelas kimia atau gelas plastic.
6) Teteskan masing-masing 2-3 tetes ekstrak bunga mawar pada masing-masing sendok.
7) Lihat dan catat perubahan warna zat setelah ditetesi dengan ekstrak dari bunga mawar.
8) Ulangi langkah no 2
9) Ulangi langkah no. 3-7 dengan menggunakan kunyit dan bayam merah secara bergantian.
Catatan:
Cara pembuatan indikator alami dari bayam merah
a) Bayam merah diiris kecil-kecil, rendam dalam air suling yang sudah dipanaskan,
b) Di tunggu sampai air berwarna ungu.
c) Saring dan diamkan dalam suhu ruang sampai dingin.
d) Indikator dapat disimpan dalam lemari es jika tidak digunakan.
Blog: KIMIA SMK ASYIKE-mail: [email protected]
VI. Tabel pengamatan
Hasil pengamatan berbagai indikator dalam larutan asam, basa, dan netral
Sampel Bayam merah Kunyit Bunga Mawar Sifat larutan
Aquades
VII. Bahan Diskusi
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VIII. Kesimpulan dan Saran
Berikan kesimpulan berdasarkan data dan pengamatan yang telah kalian lakukan!
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Blog: KIMIA SMK ASYIKE-mail: [email protected]
Berikan sara-saran berdasarkan hasil praktikum yang telah kalian lakukan!
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IX. FOTO-FOTO KEGIATAN PRAKTIKUM
Blog: KIMIA SMK ASYIKE-mail: [email protected]
![[Kimia] Asam Basa Lewis](https://img.dokumen.tips/doc/110x75/55b95266bb61eb2d308b4769/kimia-asam-basa-lewis.jpg)
