Hojimurod Toshpulatov 1 eritma dispers sistemalar. Eritmalar. Hojimurod Toshpulatov
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9-Dars. Dispers sistema. Eritma. Eruvchanlik.sharqkimyo unlocked
Hojimurod Toshpulatov
28 11. Rux sulfatning 8% li eritmasini tayyorlash uchun 57,4g ZnSO 4 ·7H 2 O ga necha gramm suv qo’shish kerak? A) 345 B) 218 C) 366 D) 380 12. 16% li 400 g temir (III) sulfat eritmasini tayyorlash uchun temir kuporosi (Fe 2 (SO 4 ) 3 ·12H 2 O) va suvdan qanchadan (g) olish kerak? A) 98,6;301,4 B) 301,4;98,6 C)110,4;289,6 D) 50;350 13. 20% li 300 g rux sulfat eritmasini tayyorlash uchun rux kuporosi (ZnSO 4 ·6H 2 O) va suvdan qanchadan (g) olish kerak? A) 200; 100 B) 100; 200 C) 150; 150 D) 25; 275 14. 10% li 200 g kobalt (II) xlorid eritmasini tayyorlash uchun CoCI 2 ·6H 2 O va suvdan qanchadan (g) olish kerak? A) 75; 125 B) 163,4; 36,6 C) 36,6; 163,4 D) 50;150 15. 16% li 800 g mis (II) sulfat eritmasini tayyorlash uchun mis kuporosi va suvdan qanchadan (g) olish kerak? A) 600;200 B) 350;450 C) 250; 550 D) 200; 600 16. 16% li mis (II) sulfat eritmasini hosil qilish uchun uning 6% li 200 g eritmasida qancha miqdorda (g) mis kuporosi CuSO 4 ·5H 2 O eritilishi lozimligini toping. A) 275 B) 175 C) 46,1 D) 41,6 17. 12% li rux sulfat eritmasini tayyorlash uchun uning 200 g 4% li eritmasida eritilishim lozim bo’lga rux sulfat kristallagidrati ZnSO 4 ·6H 2 Omassasini (g) toping. A) 41,4 B) 33,4 C) 53,3 D)63,4 18. 24% li Na 2 CO 3 eritmasini tayyorlash uchun uning 300 g 8% li eritmasida qancha Na 2 CO 3 ·10H 2 O kerak (g) A) 250,5 B) 243,75 C) 367,5 D) 158,5 19. 16% li mis sulfat eritmasini xosil qilish uchun 200 g mis kuporosi qanday massadagi 4% li mis (II) sulfat eritmasida eritilishi zarur? A) 600 B) 800 C) 500 D) 300 20. 24% li mis sulfat eritmasini xosil qilish uchun 200 g mis kuporosi qanday massadagi 8% li mis (II) sulfat eritmasida eritilishi zarur? A) 500 B) 400 C) 300 D) 200 21. 34% li natriy karbonat eritmasini hosil qilish uchun 28,6 g kristall sodani qanday miqdordagi (g) 14% li natriy karbanat eritmasida eritish zarur? A) 129,26 B) 201,76 C) 139,67 D) 4,38 22. 3,8% li temir (II) sulfat eritmasini hosil qilish uchun uning 1,2% li 200 g eritmasida qancha miqdorda (g) FeSO 4 ·7H 2 O eritilishini hiboblang. A) 16,2 B) 13,1 C) 12,4 D) 10,2 23. 29,575% li eritma xosil qilish uchun 600 g 9,1% li mis (II) asetat eritmasidan qancha miqdorda (g) mis (II) asetat kristallogidrat Cu(CH 3 COO) 2 ·H 2 Oni eritish zarur? A) 400 B) 300 C) 200 D) 20 24. 30% li eritma tayyorlash uchun 300g 10%li bariy nitrat eritmasida qancha miqdorda (g) Ba(NO 3 ) 2 ·H 2 Oni eritish zarur? A) 31 B) 20 C) 150 D) 94,5 25. 22,4% li MgCl 2 eritmasini xosil qilish uchun 8,2% li magniy xlorid eritmasining 200 g miqdorida qancha massa(g) MgCl 2* 6H 2 O eritilishi zarur. A) 350 B) 206,5 C) 116,4 D) 216 26. 40 % li eritma hosil qilish uchun tarkibida 30% suv bo’lgan kristallogidrat va suv qanday massa nisbatda olinishi lozim. A) 2:1,5 B) 3:4 C) 3:2 D) 4:2 27. 30 % li eritma hosil qilish uchun tarkibida 30% suv bo’lgan kristallogidrat va suv qanday massa nisbatda olinishi lozim. A) 2:1,5 B) 3:4 C) 2:2 D) 4:2 28. 25 % li eritma hosil qilish uchun tarkibida 50% suv bo’lgan kristallogidrat va suv qanday massa nisbatda olinishi lozim. A) 2:1,5 B) 3:4 C) 2:2 D) 1:3 29. 10 % li eritma hosil qilish uchun tarkibida 60% suv bo’lgan kristallogidrat va suv qanday massa nisbatda olinishi lozim. A) 2:1,5 B) 3:4 C) 2:2 D) 1:3 30. 50 % li eritma hosil qilish uchun tarkibida 10% suv bo’lgan kristallogidrat va suv qanday massa nisbatda olinishi lozim. A) 2,5:2 B) 3:4 C) 3:2 D) 4:2 31. 11,6 g Na 2 CO 3 ∙xH 2 O kristallogidrat HCl bilan ishlanganda, 7,2 g suv hosil bo’ldi. X qiymatini toping. A) 6 B) 7 C) 9 D) 10 |
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