Kimyo fanidan

6-Nazorat ishi 
Mavzu. Kalsiy va magniy. Suvning qattiqligi va uni yumshatish usullari. Aluminiy. 
Nazorat shakli:Masala yechish. 
I-variant. 
1. Massasi 516gr bo’lgan tabiiy gips kuydirilganda hosil bo’lgan alebastrning massasini 
hisoblang. 
2.10gr CaCO
3
dan necha gr Ca(HCO
3
)
2
olinadi? 
3.Mg(HCO
3
)
2
+Ca(OH)
2
=…………reaksiyani davon ettiring. 
Kompetentlikni aniqlash uchun materiallar: 
4.Kundalik hayotimizda eng ko’p uchratadigan alyuminiyning qanday birikmalarini bilib 
oldingiz? 
5.Ayollarimiz kir yuvish jarayonida qanday qilib qattiq suvni yumshatish usullaridan 
foydalanadilar? 
II-variant. 
1. 1,84gr dalomitni eritish uchun 10%li HCl eritmasidan necha gr kerak? 
2.30gr MaSO
4
dan necha gr Mg
3
(PO
4
)
2
olish mumkin? 
3.CaSO
4
+Na
2
CO
3
=………….reaksiyani davom ettiring. 
Kompetentlikni aniqlash uchun materiallar: 
4.Kundalik turmushimizdaalyuminiydan qanday maqsadda foydalanilishini yozib 
bering. 
5.Gipsdan qanday maqsadlarda foydalanamiz? 
 
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