Umumiy kimyo I bob. Atom tuzilishi va davriy qonun Atom tuzilishi. Elementar zarrachalar – proton, neytron, elektron

30. (99-3-43) Kuchli elektrolitiar guruhini ko'rsating. 1) kaliy xlorid, kalsiy sulfat, nitrat kislota, ammiak
g id rati; 2) kaliy nitrat, sirka kislota, natriy atsetat, alyuminiy xlorid; 3) alyuminiy xlorid, xlorid kislota, ammoniy xlorid, natriy atsetat; 4) xlorid kislota, kaliy xlorid, sirka kislota, ammoniy xlorid.
A) 1 B) 4 C) 2, 3 D) 1, 2 E) 3
31. (99-5-64) Konsentratsiyasi 0,2 mol/l bo'lgan 500 ml KOH eritmasi bilan massasi 200 g 10% li nitrat kislota eritmasining o'zaro ta'sirlashuvidan hosil bo'lgan tuzning massasini (g) hisoblab toping.
A) 5,05 B) 20,2 C) 30,3 D) 15,7 E) 10,1
32. (99-6-82) Kalsiy nitratning dissotsialanish darajasi 72% bo'lsa, uning 0,5 M li eritmasining 200 ml hajmidagi anionlar massasi qanchaga teng bo'ladi?
A) 4,45 B) 8,9 C) 6,2 D) 12,4 E) 24,8
33. (99-6-83) Kaliy nitrat eritmasining dissotsialanish darajasi 72% ga teng. 0,5 M li shu tuz eritmasining 200 ml miqdoridagi ionlar sonini hisoblang. A)1,3-10²³ B) 1.8-10²³ C)0,13-10²²
D) 0,43-10²³ E) 0,87-10²³
34. (99-6-85) Sirka kislotaning 0,1 M li eritmasining dissotsialanish darajasi 1,32% ga teng. Shunday eritmaning 1 I hajmidagi vodorod ionlari sonini hisoblang. A)0,8 10²¹ B) 1,32-10²³ C) 1,32-10²⁰ 0)0,66 10²⁰ E) 2,64-10²⁰
35. (00-2-49) Quyidagi moddalardan qaysi biri kamroq darajada dissotsialanadi? A) fenol
B) o-dinitrofenol C) m-dinitrofenol
D) p-dinitrofenol E) 2,4,6-trinitrofenol
36. (00-3-11) Elektrolitning dissotsialanish darajasini oshirish uchun qanday amallarm bajarish kerak? 1) elektrolitni sovitish; 2) elektrolitga suv qo'shish; 3) elektrolitni bug'latish; 4) bosimni orttirish; 5) isitish; 6) bosimni kamaytirish. A) 2, 5 B )1 ,3 C) 4, 6 D) 2, 4 E) 3, 5
37. (00-9-50) Elektrolitning dissotsialanish darajasi 10% ga teng bo'lsa, eritmadagi 3,01 -10²³ ta molekulaning qanchasi ionlarga parchalanadi? A) 3,01 -10²² B)3,01-10²³ C ) 3,01 10²¹ D) 6.02-10²³ E ) 6,02 10²² 38. (01-7-38) Konsentratsiyalari 0,5 M kaliy xlorid, 0,15 M kaliy sulfat va 0,45 M kaliy fosfat bo'lgan eritmalarda dissotsialanish darajasi 0,96 bo'lganda, kationning konsentratsiyasini (mol/l) hisoblang.
A) 1,98 B) 2,15 C) 2,28 D) 2,06 E) 2,45