Navoiy shahar 16-sonli ayrim fanlar chuqur o’rganiladigan ixtisoslashgan maktabi 8-“ ”­­­­­ sinf o’quvchisi

Mavzu: Azotm grupachasi mavzusini umumlashtirish.
Nazorat shakli: Masala yechish.
I-variant.
1.Azotning elektron formulasini yozing.
2.HNO₃ dagi azotning oksidlanish darajasi va valentligini yozing.
3. 12,6 gr nitrat kislota olish uchun necha gr azot (IV)-oksid zarur?
Kompetentlikni aniqlash uchun materiallar:
4.Turmushda siz uchratgan yoki eshitgan 2 ta azotli birikmani yozing va undagi azotni % toping.
5.Laborotoriya sharoitida ammiak olish tenglamasini yozib bering.
II-variant.
1.90 g suvda 6 g natriy nitrat eritildi. Hosil bo‘lgan eritmaning
foiz konsentratsiyasini aniqlang.
2.Azot qanday oksidlanish darajalarini nomoyon qiladi?
3. Azotni oxirgi elektronini 4ta kvant sonlarda ifodalang.
Kompetentlikni aniqlash uchun materiallar:
4.40% li nitrat kislota eritmasini tayyorlash uchun suv va nitrat kislota qanday massa nisbatda aralashtirish kerak?
5.Ammiakdagi elementlarni atomlar % toping.

Yechish:
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Sana___________________________