SANA: Nazorat ishi- 6 1. 46 gr Na metalining 300 g suvda erishi natijasida hosil bo’lgan eritmadagi NaOH ning foiz konsentrasiyasini toping.
2. 275 g suvda 50 g mis kuporosi eritilishi natijasida hosil bo’lgan eritmaning
konsentrasiyasini (foizda) toping.
3. masala: 300 g 5 % li va 400 g 20 % li NaCl eritmalari bir idishga
solib aralashtirilishidan hosil bo‘lgan eritmaning foiz konsentratsiyasini (%) hisoblang.
4. Sulfat kislotani 5 % li eritmasini tayyorlash uchun 1005 g suvda qancha
hajm sulfat angidrid eritilishi kerak?
5. 56 % li (ρ = 1,46 g/ml) H2SO4 eritmasining normal konsentrasiyasini aniqlang.
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