A) 40,0 B) 66,67 C) 64,36 D) 33,33
2. KCl 20˚С to'yingan eritmasining foiz konsentratsiyasi 25,37 % bo'lsa, KCl ning shu haroratdagi eruvchanlik koeffissentini toping. A) 25,37 B) 34,0 C) 29,5 D) 41,25
3. KN03 40° С to'yingan eritmasining foiz konsentratsiyasi 38,987 % bo'lsa, KN03 ning shu haroratdagi eruvchanlik koeffissentini toping.
A) 38,37 B) 67,0 C) 39,5 D) 63,9
4. K2SO4 ning 20° С dagi eruvchanlik koeffissenti 11,11 ga teng bo'lsa, shu haroratdagi to'yingan eritmaning foiz konsentratsiyasini toping.
A) 11,11 B) 9,99 C) 12,12 D) 16,44
5. Na2S04 ning 40° С dagi eruvchanlik koeffissenti 48,8 ga teng bo'lsa, shu haroratdagi to'yingan eritmaning foiz konsentratsiyasini toping.
A) 48,8 B) 32,79 C) 42,12 D) 66,44
6. KCl ning 50° С dagi eruvchanlik koeffissenti 42,6 ga teng bo'lsa, shu haroratdagi to'yingan eritmaning foiz konsentratsiyasini toping.
A) 42,6 B) 19,99 C) 29,87 D) 26,44
7. NaCl to'yingan eritmasining ma'lum haroratdagi molyal konsentratsiyasi 2 M bo'lsa, shu haroratdagi tuzning eruvchanlik koeffissentini toping.
A) 20,0 B) 11,7 C) 23,4 D) 33,33
8. MgS04 to'yingan eritmasining ma'lum haroratdagi normal konsentratsiyasi 2 N bo'lsa, shu haroratdagi tuzning eruvchanlik koeffissentini toping.
A) 20,0 B) 24,0 C) 12,0 D) 30,4
9. Na2S04 to'yingan eritmasining ma'lum haroratdagi molyal konsentratsiyasi 1,2 M bo'lsa, shu haroratdagi tuzning eruvchanlik koeffissentini toping.
A) 14,2 B) 17,04 C) 28,4 D) 33,33
10. Na2S04 to'yingan eritmasining ma'lum haroratdagi konsentratsiyasi 2 N bo'lsa, shu haroratdagi tuzning eruvchanlik koeffissentini toping.
A) 14,2 B) 17,04 C) 28,4 D) 33,33
11. KCl ma'lum haroratdagi to'yingan eritmasining eruvchanlik koeffissenti 22,35 bo'lsa, shu haroratdagi KCl ning molyal konsentratsiyasini hisoblang.
A) 0,3 B) 0,1 C) 3 D) 1
12. Na2S04 ma'lum haroratdagi to'yingan eritmasining eruvchanlik koeffissenti 35,5 bo'lsa, shu haroratdagi eritmaning molyal va normal konsentratsiyasini hisoblang. A) 2,5; 5 B) 2,5; 2,5 C) 5; 5 D) 0,25; 0,25
13. Аl(NОз)з ma'lum haroratdagi to'yingan eritmasining eruvchanlik koeffissenti 35,5 bo'lsa, shu haroratdagi eritmaning molyal va normal konsentratsiyasini hisoblang.
A) 1,67; 3,33 B) 1,67; 5,0 C) 5,0; 1,67 D) 1,67; 1,67
14. NaCl to'yingan eritmasidagi xlor va kislorod atomlari soni nisbati 1:10 bo'lsa, shu haroratdagi NaCl eruvchanlik koeffissentini toping.
A) 32,5 B) 18,6 C) 19,72 D) 14,65
15. Na2S04 to'yingan eritmasidagi natriy va kislorod atomlari soni nisbati 1:9 bo'lsa, shu haroratdagi Na2SO4 eruvchanllk koeffissentini toping.
A) 56,35 B) 42,4 C) 29,72 D) 37,94
16. NaCl to'yingan eritmasidagi xlor va kislorod atomlari massa nisbati 1:10 bo'lsa, shu haroratdagi NaCl eruvchanlik koeffissentini toping.
A) 35,5 B) 18,6 C) 19,72 D) 14,65
17. KCl to’yingan eritmasidagi xlor va kislorod atomlari massa nisbati 1:8 bo’lsa, shu haroratdagi KCl eruvchanlik koeffissentini toping.
A) 23,33 B) 51,73 C) 29,72 D) 34,65
18. Na2SO4 to’yingan eritmasidagi natriy va kislorod massa nisbati 1:9 bo’lsa, shu haroratdagi Na2S04 eruvchanlik koeffissentini toping.
A) 36,06 B) 31,11 C) 11,68 D) 30,49
19. K2SO4 to’yingan eritmasining ma’lum haroratdagi eruvchanlik koeffissenti 96,667 ga teng bo’lsa, shu eritmadagi kaliy va kislorod atomlari soni nisbati qanday ?
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