Forwarded from Maxmudov Azamat uzmobile
7.5. 66 g 20% li Na₂SO₄ eritmasiga 322 g Na₂SO₄·10H₂O (Glauber tuzi) qo‘shildi. Olingan eritmaning konsentratsiyasini (%) hisoblang.
A) 35 B) 30 C) 45 D) 40
A) 35 B) 30 C) 45 D) 40
Forwarded from Maxmudov Azamat
7.6. 55 g 16% li MgSO₄ eritmasiga 41 g MgSO₄·7H₂O kristallogidrati qo‘shildi. Olingan eritmaning konsentratsiyasini (%) hisoblang.
A) 25 B) 30 C) 35 D) 20
A) 25 B) 30 C) 35 D) 20
Forwarded from Maxmudov Azamat
7.7. 132 g 30% li Na₂SO₄ eritmasiga 322 g Na₂SO₄·10H₂O (Glauber tuzi) qo‘shildi. Olingan eritmaning konsentratsiyasini (%) hisoblang.
A) 30 B) 45 C) 40 D) 35
A) 30 B) 45 C) 40 D) 35
Forwarded from Maxmudov Azamat
7.8. 100 g 13% li CuSO₄ eritmasiga 50 g CuSO₄·5H₂O (mis kuporosi) qo‘shildi. Olingan eritmaning konsentratsiyasini (%) hisoblang.
A) 25 B) 35 C) 30 D) 20
A) 25 B) 35 C) 30 D) 20
Forwarded from Maxmudov Azamat
8.1. Zichligi 1,2 g/ml bo‘lgan 300 ml eritmaning foiz konsentratsiyasi 25% ga teng bo‘lsa, undagi erigan modda massasini (g) aniqlang.
A) 75 B) 120 C) 90 D) 60
A) 75 B) 120 C) 90 D) 60
Forwarded from Maxmudov Azamat
8.2. Zichligi 1,25 g/ml bo‘lgan 240 ml eritmaning foiz konsentratsiyasi 30% ga teng bo‘lsa, undagi erigan modda massasini (g) aniqlang.
A) 75 B) 100 C) 90 D) 120
A) 75 B) 100 C) 90 D) 120
Forwarded from Maxmudov Azamat
8.3. Zichligi 1,4 g/ml bo‘lgan 250 ml eritmaning foiz konsentratsiyasi 20% ga teng bo‘lsa, undagi erigan modda massasini (g) aniqlang.
A) 60 B) 80 C) 50 D) 70
A) 60 B) 80 C) 50 D) 70
Forwarded from Maxmudov Azamat
9.1. Agar 90 g suvda 0,5 mol X modda eritilsa va 25% li eritma olinsa, X ning nisbiy molekulyar massasini aniqlang.
A) 40 B) 50 C) 60 D) 75
A) 40 B) 50 C) 60 D) 75
Forwarded from Maxmudov Azamat
9.2. Agar 120 g suvda 0,4 mol X modda eritilsa va 20% li eritma olinsa, X ning nisbiy molekulyar massasini aniqlang.
A) 60 B) 75 C) 80 D) 90
A) 60 B) 75 C) 80 D) 90
Forwarded from Maxmudov Azamat
9.3. Agar 150 g suvda 0,5 mol X modda eritilsa va 20% li eritma olinsa, X ning nisbiy molekulyar massasini aniqlang.
A) 60 B) 80 C) 75 D) 90
A) 60 B) 80 C) 75 D) 90
Forwarded from Maxmudov Azamat
10.1. Quyida X·nH₂O tarkibli kristallogidratdan suvni to‘liq chiqarish vaqtida qattiq moddaning massasining vaqtga bog‘liqlik grafigi berilgan. Qizdirish oxirida qattiq modda massasi 15 g bo‘lib qoldi.
Agar m gramm kristallogidrat 110 g suvda to‘liq eritilganda 10% li eritma olinsa, m ni aniqlang.
A) 35 B) 45 C) 40 D) 30
Agar m gramm kristallogidrat 110 g suvda to‘liq eritilganda 10% li eritma olinsa, m ni aniqlang.
A) 35 B) 45 C) 40 D) 30
Forwarded from Maxmudov Azamat
10.2. X·nH₂O tarkibli kristallogidratdan suv to‘liq chiqarilganda qattiq modda massasi 18 g bo‘lib qoldi. Agar m gramm kristallogidrat 102 g suvda to‘liq eritilganda 12% li eritma olinsa, m ni aniqlang.
A) 42 B) 54 C) 48 D) 36
A) 42 B) 54 C) 48 D) 36
Forwarded from Maxmudov Azamat
10.3. X·nH₂O tarkibli kristallogidratdan suv to‘liq chiqarilganda qattiq modda massasi 20 g bo‘lib qoldi. Agar m gramm kristallogidrat 105 g suvda to‘liq eritilganda 12,5% li eritma olinsa, m ni aniqlang.
A) 45 B) 55 C) 60 D) 50
A) 45 B) 55 C) 60 D) 50
Forwarded from Maxmudov Azamat
10.4. X·nH₂O tarkibli kristallogidratdan suv to‘liq chiqarilganda qattiq modda massasi 24 g bo‘lib qoldi. Agar m gramm kristallogidrat 96 g suvda to‘liq eritilganda 15% li eritma olinsa, m ni aniqlang.
A) 56 B) 72 C) 60 D) 64
A) 56 B) 72 C) 60 D) 64
Forwarded from Maxmudov Azamat
11.1. 80°C dagi A moddaning (M = 160 g/mol) 100 g to‘yingan eritmasi 20°C gacha sovitilganda 0,25 mol tuz cho‘kmaga tushdi. Agar eruvchanlik grafigiga ko‘ra 20°C da eruvchanlik x, 80°C da esa 4x + 20 g/100 g suvga teng bo‘lsa, x ni aniqlang.
A) 15 B) 25 C) 20 D) 30
A) 15 B) 25 C) 20 D) 30
Forwarded from Maxmudov Azamat
11.2. 80°C dagi A moddaning (M = 150 g/mol) 120 g to‘yingan eritmasi 20°C gacha sovitilganda 0,30 mol tuz cho‘kmaga tushdi. Agar eruvchanlik grafigiga ko‘ra 20°C da eruvchanlik x, 80°C da esa 3x + 25 g/100 g suvga teng bo‘lsa, x ning qiymatini aniqlang.
A) 20 B) 30 C) 15 D) 25
A) 20 B) 30 C) 15 D) 25
Forwarded from Maxmudov Azamat
11.3. 80°C dagi A moddaning (M = 120 g/mol) 90 g to‘yingan eritmasi 20°C gacha sovitilganda 0,25 mol tuz cho‘kmaga tushdi. Agar eruvchanlik grafigiga ko‘ra 20°C da eruvchanlik x, 80°C da esa 3x + 20 g/100 g suvga teng bo‘lsa, x ni aniqlang.
A) 15 B) 25 C) 30 D) 20
A) 15 B) 25 C) 30 D) 20
Forwarded from Maxmudov Azamat
11.4. 80°C dagi A moddaning (M = 150 g/mol) 95 g to‘yingan eritmasi 20°C gacha sovitilganda 0,20 mol tuz cho‘kmaga tushdi. Agar eruvchanlik grafigiga ko‘ra 20°C da eruvchanlik x, 80°C da esa 2x + 30 g/100 g suvga teng bo‘lsa, x ni aniqlang.
A) 20 B) 25 C) 35 D) 30
A) 20 B) 25 C) 35 D) 30
Forwarded from Maxmudov Azamat
12.1. To‘yingan eritmadan 420 g suv bug‘lanishi natijasida 120 g kristallogidrat cho‘kmaga tushdi. Kristallogidrat tarkibidagi tuzning massa ulushini (%) hisoblang. (S = 20)
A) 60 B) 70 C) 75 D) 80
A) 60 B) 70 C) 75 D) 80
Forwarded from Maxmudov Azamat
12.2. To‘yingan eritmadan 300 g suv bug‘lanishi natijasida 100 g kristallogidrat cho‘kmaga tushdi. Kristallogidrat tarkibidagi tuzning massa ulushini (%) hisoblang. (S = 25)
A) 60 B) 75 C) 70 D) 80
A) 60 B) 75 C) 70 D) 80
Forwarded from Maxmudov Azamat
12.3. To‘yingan eritmadan 400 g suv bug‘lanishi natijasida 200 g kristallogidrat cho‘kmaga tushdi. Kristallogidrat tarkibidagi tuzning massa ulushini (%) hisoblang. (S = 20)
A) 60 B) 40 C) 50 D) 75
A) 60 B) 40 C) 50 D) 75