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motivasi belajar plus (bu etna)

Arsip Bulan April 2012

Eliminasi Alkil Halida

Reaksi eliminasi alkil halida dapat menggunakan air. Pada pelajaran yang lalu ...

Reaksi Eliminasi

Reaksi eliminasi merupakan reaksi pelepasan suatu molekul air atau molekul lain sehingga massa molekul relatif (Mr) pereaksi berkurang dan Mr produk lebih kecil dibanding Mr pereaksinya. Contohnya eliminasi molekul air dari alkanol menjadi alkena.

Reaksi di atas memerlukan pemanasan sekitar 180oC. Dapatkah molekul air tereliminasi dari alkanol hanya dengan pemanasan? Oh tentu saja tidak dapat. Apa yang terjadi jika alkanol itu dipanaskan? Ya jelaslah alkanol itu akan menguap. Adakah zat yang diperlukan untuk mengeliminasi molekul air? Ada ...

Coca cola dan telur

Coca cola dan telur mau diapakan? Direaksikan? Oh ... tidak, percobaan ini mengenai salah satu dari sifat koligatif larutan ...

Osmosis dengan telur mentah

Osmosis yang ditunjukkan dalam video di bawah menggunakan telur mentah. Apakah osmosis itu? Osmosis adalah suatu peristiwa perpindahan molekul-molekul air melalui membran semi permeabel. Apakah membran semi permeabel itu? Suatu membran/selaput yang memiliki pori-pori relatif kecil ...

Difusi melalui membran

Difusi melalui membran semi permeabel dalam video di bawah ini dapat digunakan untuk menunjukkan proses dialisis. Benarkah dalam proses dialisis ...

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