mavzu 2 (kimyoviy reaksiyalar)

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ishlanishlarini ko'rish uchun quydagi telegram kanalimizga kiring: kimyo tv 2-mavzu 1. 31,6 gr kaliy permanganat ( kmno4 ) parchalanishi natijasida necha litr kislorod ajralib chiqadi? (kmno4→k2mno4+mno2+o2↑) a) 4,48 b) 3,36 c) 2,24 d) 1,12 2. 23,7 gr kaliy permanganat parchalanishi natijasida necha litr kislorod ajralib chiqadi ? a) 1,68 b) 3,36 c) 1,17 d) 2,4 3. 31,6gr kmno4 parchalanganda hosil bo‘lgan oksid massasini gr hisoblang. a) 6,4 b) 8,7 c) 17,4 d) 19,7 4. 49gr bertole tuzining katalizator ishtirokida parchalanishidan hosil bo‘lgan gazning massasini aniqlang. ( kclo3 → kcl + o2 ) a) 19,2 b) 16 c) 12,8 d) 6,4 5. agar rux nitratning parchalanishidan 40,5gr rux oksid xosil bo‘lgan bo‘lsa, parchalangan rux nitrati massasi(gr) va xosil bo'lgan gazlar xajmi (litr n.sh.) to‘g‘ri ko‘rsatilgan qatorni toping. ( zn(no3)2 → zno + no2↑ + o2↑ ) a) 0,5; 1; 0,25 b) 94,5; 46; 8 c) 94,5; 22,4; 5,6 d) 94,5; 11,2; …

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id olish uchun necha gramm malaxitni termik parchalash kerak ? a) 27,75 b) 10 c) 22,2 d) 11,1 15. 22gr oxaktoshni to‘liq parchalab necha gramm karbonat angidrid olish mumkin ? ( caco3 → cao + co2↑ ) a) 9,68 b) 0,22 c) 0,24 d) 13 16. 45gr oxaktoshni to‘liq parchalab necha gramm karbonat angidrid olish mumkin ? a) 19.8 b) 10,08 c) 15 d) 7,56 17. 53,9gr sulfat kislotani to'liq neytrallash uchun necha gramm o‘yuvchi natriy (naoh) talab etiladi? a) 22 b) 44 c) 0,55 d) 1,1 18. 63,7gr sulfat kislotani to‘liq neytrallash uchun necha gramm o‘yuvchi natriy talab etiladi? a) 36,4 b) 18,2 c) 26 d) 52 19. kaliy gidridiga ( kh ) suv tasir ettirilganda 11,2 l gaz ajralib chiqdi, reaksiyada qatnashgan kaliy gidridi massasini aniqlang. ( kh + h2o → koh + h2↑ ) a) 40 b) 20 c) 39 d) 19,5 20. kaliy gidridiga ( kh …

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al sharoitda 10,08 litr gaz ajralib chiqadi? a) 8,1 b) 11,2 c) 10,8 d) 5,4 29. 12,8gr mis (ii) oksid olish uchun necha gramm mis (ii) nitratni termik parchalash kerak? (cu(no3)2→cuo+no2↑+o2) a) 30,08 b) 43 c) 0,16 d) 0,23 30. 27,3gr silikat kislota ( h2sio3 ) olish uchun necha grammdan natriy silikat va xlorid kislota talab etiladi ? ( na2sio3 + hcl → nacl + h2sio3↓ ) a) 34,65; 25,5 b) 42,7; 25,5 c) 42,7; 12,75 d) 34,65; 12,75 31. 15,6gr silikat kislota ( h2sio3 ) olish uchun necha grammdan natriy silikat va xlorid kislota talab etiladi ? a) 0,2; 0,2 b) 0,2; 0,4 c) 24,4; 14,6 d) 24,4; 7,1 32. 101gr kaliy nitratni to‘liq parchalab necha gramm kaliy nitrit olish mumkin ? ( kno3 → kno2 + o2↑ ) a) 85 b) 51 c) 1 d) 0,6 33. 18,6g nartiy oksidining suvda erishi natijasida xosil bo‘lgan ishqor miqdorini (gr) …

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ishi to’g’ri ko’rsatilgan javobni toping a) 45,6g cr2o3; 5,4g h2o; 6,72g n2 xosil bo‘ladi b) 45,6g cr2o3; 22,4l h2o; 8g n2 xosil bo‘ladi c) 45,6g cr2o3; 21,6g h2o; 6,72l n2 xosil bo‘ladi d) 76g cr2o3; 36g h2o; 14g n2 xosil bo‘ladi https://t.me/joinchat/aaaaafpdk1rknpqbrl4mca ishlanishlarini ko'rish uchun quydagi telegram kanalimizga kiring: kimyo tv 40. 151,2gr ammoniy dixromat parchalanganda moddalarning xosil bo’lishi to’g’ri ko’rsatilgan javobni toping a) 15,6g cr2o3; 5,4g h2o; 6,72g n2 xosil bo‘ladi b) 45,6g cr2o3; 22,4l h2o; 8g n2 xosil bo‘ladi c) 91.2g cr2o3; 43,2g h2o; 13,44l n2 xosil bo‘ladi d) 15,6g cr; 10,2g nh3; 5,4g h2o; 19,2g o2 xosil bo‘ladi 41. termik parchalanish natijasida 2 mol kaliy nitratning massasi necha grammga kamayadi? ( kno3 → kno2 + o2 ) a) 16,6 b) 16,3 c) 14,0 d) 32 42. termik parchalanish natijasida 2,5 mol kaliy nitratning massasi necha grammga kamayadi? a) 48 b) 56 c) 40 d) 24 e) 32 …

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ishlanishlarini ko'rish uchun quydagi telegram kanalimizga kiring: kimyo tv 2-mavzu 1. 31,6 gr kaliy permanganat ( kmno4 ) parchalanishi natijasida necha litr kislorod ajralib chiqadi? (kmno4→k2mno4+mno2+o2↑) a) 4,48 b) 3,36 c) 2,24 d) 1,12 2. 23,7 gr kaliy permanganat parchalanishi natijasida necha litr kislorod ajralib chiqadi ? a) 1,68 b) 3,36 c) 1,17 d) 2,4 3. 31,6gr kmno4 parchalanganda hosil bo‘lgan oksid massasini gr hisoblang. a) 6,4 b) 8,7 c) 17,4 d) 19,7 4. 49gr bertole tuzining katalizator ishtirokida parchalanishidan hosil bo‘lgan gazning massasini aniqlang. ( kclo3 → kcl + o2 ) a) 19,2 b) 16 c) 12,8 d) 6,4 5. agar rux nitratning parchalanishidan 40,5gr rux oksid xosil bo‘lgan bo‘lsa, parchalangan rux nitrati massasi(gr) va xosil bo'lgan gazlar xajmi …

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