Foiz konsentratsiya (eritmaning massa ulushi )
Download 0.51 Mb. Pdf ko'rish
|
6-7-8-amaliy konsentratsiya (1)
- Bu sahifa navigatsiya:
- 3-Mavzu: Qaychi usulda foiz konsentratsiyani topish. (Aralashtrish qoidasi). 1.
6. 1000 ml 10 % li ishqor eritmasini (ρ=1,225 g/ml)
tayyorlash uchun necha gramm natriy olish kerak? A) 70,4 B) 80,5 C) 46,6 D) 66 7. 0,355 l (ρ=1,282 g/ml) 30% li KOH eritmasiga 500 ml 10% (ρ=1,09 g/ml) li KOH eritmasi quyilganda hosil bo’lgan eritmadagi KOH ning massa ulushi (%) toping. A) 16,7 B) 19,1 C) 23,4 D) 20,1 8. 36,5% li HCl eritmasini hosil qilish uchun 1200 ml suvga (n.sh.da) qancha hajm l HCl gazini eritish kerak? A) 30,5 B) 34,5 C) 27,7 D) 423,3 9. Natriy gidroksidning 40% li 200 ml (ρ=1,43 g/ml) va 10% li 300 ml eritmalari (ρ=1,1g/ml) aralashtirildi. Hosil bo’lgan eritmaning konsentratsiyasini (%) toping. A) 26 B) 16 C) 24 D) 36 10. Xlorid kislotaning 10% li eritmasini hosil qilish uchun uning 5% li (ρ=1,25 g/ml) 500 ml eritmasiga 30% li (ρ=1,15 g/ml) eritmasidan qancha hajm (ml) qo’shish kerakligini toping. A) 31,25 B) 156,25 C) 93,75 D) 135,9 3-Mavzu: Qaychi usulda foiz konsentratsiyani topish. (Aralashtrish qoidasi). 1. 500 kg 40% li NaOH eritmasini tayyorlash uchun 50% li va 30% li eritmalardan qanchadan (kg) olish kerak? A) 125:375 B) 375:125 C) 225:275 D) 250:250 2. 70% li va 30% li tuz eritmalaridan 40% li eritma tayyorlash uchun ularni qanday massa nisbatlarda aralashtirish kerak? A) 35:8 B) 8:35 C) 10:25 D) 10:30 3. 20% li sulfat kislota eritmasidan 150 g tayyorlash uchun 60% li va 10% li eritmalaridan necha grammdan olish kerak? A) 40:110 B) 45:105 C) 35:115 D) 30:120 4. 26% ishqor eritmasini hosil qilish uchun uning 30% li 100 g eritmasiga 10% li eritmasidan qanday miqdorda qo’shish kerak? A) 25 B) 50 C) 100 D) 10 5. Massa ulushi 0,65 bo’lgan 700 g sirka kislota eritmasini tayyorlash uchun sirka angidrid va 20 % li sirka kislota eritmasidan qanday miqdorda (g) olish mumkin? A) 85,55 va 185,55 B) 322,74 va 377,26 C) 320 va 380 D) 85,55 va 377,26 6. 98% li H 2 SO 4 eritmasidan 1200 g tayyorlash uchun sulfat angidrid va 32% li sulfat kislota eritmasidan qanday miqdorda (g) olish zarur? A) 269,39:369,39 B) 875,14:324,86 C) 245,66:355,66 D) 160,50:940,50 7. 56% li sulfit kislota eritmasidan 650 g tayyorlash uchun sulfit angidrid va 14% li sulfit kislota eritmasidan qancha miqdorda (g) kerak? A) 58,33:158,33 B) 410,59:238,47 C) 239,2:410,8 D) 310,59:239,47 8. O’yuvchi natriyning 60% li eritmasidan 600 g tayyorlash uchun uning 10% li eritmasidan va natriy oksididan qancha miqdordan (g) olish zarur? A) 72,46:172,46 B) 347,9:72,46 C) 252,09:347,9 D) 347,9:252,09 9. O’yuvchi kaliyning 66% li eritmasidan 750 g tayyorlash uchun uning 18% li eritmasidan va kaliy oksididan qancha miqdorda (g) olish zarur? A) 349,5:300,49 B) 400,49:349,5 C) 187,27:200,4 D) 394,4:356 10. Mis (II) atsetatning 20% li eritmasidan 430 g tayyorlash uchun mis (II) atsetat kristallgidrati Cu(CH 3 COO) 2 •H 2 O va 5% li mis (II) atsetat eritmasidan qanday miqdorda (g) olish kerakligini hisoblang. A) 85:245 B) 75:355 C) 95;455 D) 65:455 11. 6,84% li mis (II) xlorid eritmasidan 1000 g tayyorlash uchun mis (II) xlorid kristallgidrati CuCl 2 •2H 2 O va 2% li eritmasidan qancha miqdorda (g) olinishi zarurligini toping. A) 28,64:704,41 B) 38,6:805 C) 48,6:940 D) 63:937 12. 8,4% li MgCl 2 eritmasidan 800 g tayyorlash uchun magniy xlorid kristallgidrati MgCl 2 •6H 2 O va 4,2% li eritmasidan qanday miqdorda (g) olinishi zarur? A) 600:200 B) 721,12:78,88 C) 740:60 D) 400:400 13. 16% li mis (II) sulfat eritmasidan 600 g tayyorlash uchun mis kuporosi CuSO 4 •5H 2 O va 6% li mis (II) sulfat eritmasidan qanday miqdorda (g) olinishi zarur? A) 200:400 B) 300:300 C) 496,5:103,5 D) 180,5:419,5 14. 24% li bariy nitrat eritmasidan 300 g tayyorlash uchun uning 7% li eritmasidan va Ba(NO 3 ) 2 •H 2 O dan qanday miqdorda (g) olinishi zarur? A) 321:69 B) 241:59 C) 211:89 D) 200:100 15. Osh tuzining 20% li eritmasidan 600 g tayyorlash uchun uning 10% li va 40% li eritmalaridan necha grammdan olish kerak? A) 400:200 B) 300:300 C) 200:400 D) 150:450 16. Osh tuzining 20% li eritmasidan 800 g tayyorlash uchun uning 5% li va 30% li eritmalaridan necha grammdan olish kerak? A) 320:480 B) 480:320 C) 380:420 D) 400:400 17. Osh tuzining 10% li eritmasidan 600 g tayyorlash uchun uning 4% li va 25% li eritmalaridan necha grammdan olish kerak? A) 171,4:428,6 B) 428,6:171,4 C) 328,6;271,4 D) 428,4:171,6 18. Osh tuzining 20% li eritmasidan 300 g tayyorlash uchun uning 8% li va 40% li eritmalaridan necha grammdan olish kerak? A) 187,5:112,5 B) 112,5:187,5 C) 120:180 D) 150:150 19. 16% li 200 g mis (II) sulfat eritmasini tayyorlash uchun mis kuporosi va suvdan necha grammdan olish kerak? A) 50:150 B) 100:100 C) 25:175 D) 150:50 20. 8% li 600 g mis (II) sulfat eritmasini tayyorlash uchun mis kuporosi va suvdan necha grammdan olish kerak? A) 50:550 B) 75:525 C) 525:75 D) 400:200 21. 16% li 400 g temir (III) sulfat eritmasini tayyorlash uchun temir kuporosi (Fe 2 (SO 4 ) 3 •12H 2 O) va suvdan necha grammdan olish kerak? A) 98,6:301,4 B) 301,4:98,6 C) 110,4:289,6 D) 50:350 22. 20% li 300 g rux sulfat eritmasini tayyorlash uchun rux kuporosi (ZnSO 4 •6H 2 O) va suvdan necha grammdan olish kerak? A) 200:100 B) 100:200 C) 150:150 D) 25:275 23. 20% li KOH eritmasini hosil qilish uchun, tarkibida 44 g KOH tutgan 453 g eritmada qancha (g) kaliy oksidni eritish kerak? A) 47 B) 48 C) 45 D) 51 24. Sulfat kislotaning 20% li eritmasini hosil qilish uchun 500 g suvda necha gramm oltingugurt (VI) oksidni eritish kerak? A) 78,25 B) 85,48 C) 97,56 D) 100 25. 100 g 15% li NaCl eritmasida necha gramm osh tuzi eritilganda, eritma konsentratsiyasi 20% bo’ladi? A) 4,25 B) 5,25 C) 6,25 D) 7,25 Download 0.51 Mb. Do'stlaringiz bilan baham: |
Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling
ma'muriyatiga murojaat qiling