Jizzax shahar maktabgacha va maktab ta`limi vazirgiga qarashli 29-umumta`lim maktabi 10 – “ ” sinf o`quvchisi


Atseton, etanol va suvning bug‘lanish tezligini solishtirish


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10-sinf kimyo amaliyb daftari 2022

2. Atseton, etanol va suvning bug‘lanish tezligini solishtirish
Jihozlar: shisha plastinka.
Reaktivlar: atseton, etanol, suv.
2.1. Shisha plastinkaga atseton, etanol va suvdan bir tomchi tomizing hamda ularning to‘liq bug‘lanish vaqtini hisoblang.
2.2. Daftarga ularning bug‘lanish vaqtini yozing va olingan natijalarni tushuntiring.
3. Parafi nning qotish haroratini aniqlash
Jihozlar: spirt lampa, probirka, termometr.
Reaktivlar: parafi n.
3.1. Parafi n bo‘laklarini probirkaga soling. Probirkadagi parafi n to‘liq erigunicha spirt
lampasida qizdiring.
3.2. Spirt lampa olovini o‘chirib, erigan parafi nga termometrni botiring va ko‘rsatgichini yozib oling.
3.3. Olingan ma’lumotlarga asoslanib parafi nning harorat o‘zgarishi bilan suyuqlanish va qotish nuqtasi grafi gini chizing. Parafi n qanday haroratda qattiqlashgan?
Xulosa:
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2 – Amaliy mashg`ulot.
Mavzu: ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ORGANIK BIRIKMALAR TARKIBINI TAHLIL QILISH
­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­Ishdan maqsad: : organik birikmalar sifatini tahlil qilishni o‘rganish.
Uglerodni aniqlash__
Kerakli jihoz va reaktivlar chinni kosacha, laboratoriya shtativi, spirt lampasi.
Ishning borishi
1. Chinni kosachaga oz miqdorda shakar solinadi, shtativga o‘rnatiladi.
2. Spirt lampa yordamida qizdiriladi.
3. Shakar qorayadi, uglerod oddiy modda – ko‘mir holatida ajraladi
Xulosa:
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