Kimyoviy bog‘lanish

01-4son-33.
16. 60⁰C da 540 g to‘yingan litiy sulfat eritmasi bug‘latilishi natijasida 96 g litiy sulfat tuzi olindi. Litiy sulfatning shu temperaturadagi eruvchanlik koeffitsientini toping.
A) 21,6 B) 31,6 C) 41,6 D) 63,1 E) 79
01-4son-34.
17. Bir tuzning xona temperaturasidagi to‘yingan eritmasidagi massa ulushi 0,2 ga teng. SHu tuzning massa ulushi 0,3 bo‘lgan 300 g eritmasi uy temperaturasigacha sovutilganda, qancha (g) tuz cho‘kmaga tushadi?
A) 37,5 B) 82,5 C) 50,0 D) 85,2 E) 48,0
01-4son-35.
18. 25⁰C da kaliy nitratning to‘yingan eritmasida uning massa ulushi 34% ni tashkil etsa, uning shu temperaturadagi eruvchanlik koeffitsienti qanchaga teng bo‘ladi?
A) 31,6 B) 34,3 C) 24 D) 51,5 E) 12
01-4son-36.
19. 15⁰C da kaliy nitratning to‘yingan eritmasida uning massa ulushi 20% ni tashkil etsa, shu temperaturada 50 g kaliy nitratni eritishi uchun qancha massa (g) suv talab etiladi?
A) 158,3 B) 135,8 C) 138,5 D) 208,3 E) 200
01-4son-37.
20. Agar ammoniy xloridning 100⁰C dagi to‘yingan eritmasi tarkibida 50 ml suv bo‘lsa, bu eritma 0⁰C gacha sovutilganda, qancha ammoniy xlorid cho‘kmaga tushadi? S(0⁰C)=37,0, S(100⁰C)=77,0
A) 10 B) 20 C) 30 D) 37 E) 78,6
01-4son-38.
21. Kumush nitratning 60⁰C dagi to‘yingan eritmasi 20⁰C gacha sovutilganda, 15 g tuz cho‘kmaga tushishi uchun zarur bo‘lgan eritmani tayyorlash uchun talab etiladigan tuz va suvning massasini toping?
S(20⁰C)=222, S(60⁰C)=450
A) 11,8; 6 B) 36,2; 8,04 C) 29,6; 6,6 D) 16,1; 4 E) 41,1; 15
01-4son-39.
22. Kaliy bromidning 80⁰C dagi to‘yingan eritmasi 20⁰C gacha sovutilganda, 120 g tuz cho‘kmaga tushishi uchun zarur bo‘lgan eritmani tayyorlash uchun talab etiladigan tuz va suv massasini toping?
S(20⁰C)=65, S(80⁰C)=95
A) 500; 475 B) 325; 500 C) 380; 400 D) 475; 500 E) 510; 425