• Document: KIMIA KELAS XI SEMESTER 2
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YAYASAN WIDYA BHAKTI SEKOLAH MENENGAH ATAS SANTA ANGELA TERAKREDITASI A Jl. Merdeka No. 24 Bandung  022. 4214714 – Fax.022. 4222587 043 http://www.smasantaangela.sch.id, e-mail : smaangela@yahoo.co.id URS is member of Registar of Standards (Holding) Ltd. ISO 9001 : 2008 Cert. No. 47484/A/0001/UK/En MODUL PEMBELAJARAN KIMIA KELAS XI SEMESTER 2 TAHUN PELAJARAN 2015 – 2016 DAFTAR ISI LARUTAN ASAM – BASA ............................................................................................. 6 LARUTAN ASAM ......................................................................................................... 7 LARUTAN BASA ........................................................................................................ 13 1. Teori Asam-Basa Arrhenius.............................................................................. 15 2. Teori Asam-Basa Bronsted-Lowry ................................................................... 16 3. Teori Asam-Basa Lewis .................................................................................... 19 LATIHAN SOAL ASAM BASA 1 .................................................................................. 21 KONSEP pH, pOH, DAN pKw...................................................................................... 22 1. Tetapan Kesetimbangan Air (Kw) ........................................................................ 22 2. pH dan pOH .......................................................................................................... 23 3. Hubungan Tingkat Keasaman dengan pH............................................................. 24 4. Derajat keasaman (pH) Asam / Basa Kuat ............................................................ 25 LATIHAN SOAL KONSEP pH, pOH, dan pKw ............................................................. 28 STOIKIOMETRI LARUTAN ....................................................................................... 29 1. Persamaan Ion ....................................................................................................... 29 2. Reaksi Oksida Basa dengan Asam ........................................................................ 30 3. Reaksi Oksida Asam dengan Basa ........................................................................ 30 4. Reaksi Amonia dengan Asam ............................................................................... 30 5. Reaksi-Reaksi Pergantian (Dekomposisi) Rangkap.............................................. 31 6. Reaksi Logam dengan Asam Kuat Encer.............................................................. 32 [2] – Kimia Kelas XI Semester 2 LATIHAN SOAL STOIKIOMETRI LARUTAN ............................................................ 34 TITRASI ASAM BASA .................................................................................................. 37 Titik Ekuivalen ................................................................................................................ 38 Pemilihan indikator yang cocok ......................................................................................... 39 Pemilihan indikator untuk titrasi ................................................................................... 39 Asam kuat vs basa kuat ................................................................................................. 41 Asam kuat vs basa lemah .............................................................................................. 42 Perhitungan titrasi: dari volume kedalam jumlah mol .................................................. 42 Kurva titrasi asam kuat dengan basa kuat ..................................................................... 43 Kurva titrasi asam lemah dengan basa kuat .................................................................. 44 Kurva titrasi asam kuat dengan basa lemah .................................................................. 44 LATIHAN SOAL TITRASI ............................................................................................. 45 LARUTAN PENYANGGA/BUFFER ........................................................................... 48 1. Jenis-jenis larutan penyangga ............................................................................... 48 a. Campuran Asam Lemah dan Basa Konjugasinya(Buffer Asam) ...................... 48 b. Campuran Basa Lemah dan Asam Konjugasinya (Buffer Basa) ...................... 49 c. Larutan Penyangga yang terdiri dari Basa lemah dengan asam konjugasinya.. 50 2. Sifat-sifat Larutan Penyangga ...............................................................................

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