Atom tarkibi

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.