1-Nazorat ishi

Test raqamlari	1	2	3	4	5	6	7	8	9	10	11	12	13	14
15
O’quvchining javoblari.
O’qituvchining belgilari

Nazorat ishining bali _________


To’ldiruvchi savollar


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To’ldiruvchi so’rov bali ________


5- Nazorat ishi
Mavzu: “Suvning tarkibi xossalari, tarqalishi, ahamiyati, ishlatilishi”,”Eruvchanlik”, “Eritmalar”mavzularni umumlashtirish.
Nazorat shakli: Masalalar yechish.
I variant
1. 3,9g kaliy miqdori suv bilan reaksiyaga kirishgan qancha hajm (n.sh. da) vodorod ajralib chiqadi?
2. Tuzning 20^oC dagi eruvchanlik 25 ga teng bo’lsa, 200 g to’yingan eritmada shu tuzdan necha g bo’ladi?
3. 250 g 10% li natriy gidroksid NaOH eritmasiga 150 g suv quyiladi. Hosil bo’lgan eritmaning konsentratsiyasi ( %) nechaga teng?
4.500 ml 0,2 eritma tayyorlash uchun necha g kaliy karbonat K₂CO₃ kerak bo’ladi?
Masalalarni yechilishi_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Nazorat ishining bali _________