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M li HCN eritmasining pH ni toping ( KHCN=4•10-10) A) 2 B) 1 C) 13 D) 5 33


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32. 0.25M li HCN eritmasining pH ni toping
( KHCN=4•10-10) A) 2 B) 1 C) 13 D) 5
33.0.1 M li HF eritmasining pH ni toping
(KHF= 10-5) A) 2 B) 1 C)3 D) 5

34.100 ml 0.12M li KOH eritmasiga 100 ml 0.1M li HBr eritmasi quyildi. Eritmaning pH qiymati 2 ga teng bo’lishi uchun eritmaga yana qanday hajmda (ml) 0.1 M li HBr eritmasi quyish kerak
A) 44,4 B) 11,1 C) 13,3 D) 55,5

35.200 ml 0.15M li HCl eritmasiga NaOH ning 0.1M li eritmasidan qanday hajmda (ml) qo’shilganda olingan eritmaning pH qiymati 12 ga teng bo’ladi.
A) 222 B) 106,5 C) 356 D) 50

36.200 ml 0.15M li HCl eritmasiga 100 ml 0.1M li NaOH eritmasi quyildi. Eritmaning pH qiymati 12 ga teng bo’lishi uchun eritmaga yana qanday hajmda (ml) 0.1 M li NaOH eritmasi quyish kerak
A) 222 B) 365 C) 356 D) 256
37. 1960 g 5% li H2SO4 va 2040 g 4% li NaOH
eritmalari aralashtirilishidan hosil bo’lgan
eritmaning (P=1 g/ml) pH qiymatini aniqlang.
A) 12 B) 2 C) 11 D) 3


38.12,25 g 5% li H2SO4 va 12,75 g 4% li NaOH
eritmalari aralashtirilishidan hosil bo’lgan
eritmaning (P=1 g/ml) pH qiymatini aniqlang.
A) 12 B) 2 C) 13 D) 1


39.2450 g 4% li H2SO4 va 1550 g 5,265% li NaOH
eritmalari aralashtirilishidan hosil bo’lgan
eritmaning (P=1 g/ml) pH qiymatini aniqlang.
A) 12 B) 2 C) 10 D) 4


40. Sulfat kislotaning 800 ml pH = 2 va 400 ml
pH = 3 bo‘lgan eritmalari aralashtirilishidan
hosil bo‘lgan eritmaning molyar konsentratsiyasini toping. A) 0,0035 B) 0,0042 C) 0,0003 D) 0,006


41.HCl ning 0,005M li va 0,095M li eritmalaridan
0,25 l dan olib aralashtirilganda hosil bo‘lgan
eritmaning pOH qiymatini toping.
A) 13 B) 1 C) 12 D) 2


42.0,4 mol/l li 200 ml H2SO4 eritmasining pH=2
bo‘lishi uchun bu eritmaga 0,1M li NaOH
eritmasidan necha l qo‘yish kerak?
A) 1,05 B) 1,22 C) 1,8 D) 1,44

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