I bob. Kimyoning asosiy tushuncha va

V.4 VODOROD KO‘RSATKICh (pH)
148. 0, 00001 mol/l li nitrat kislota eritmasining pH ni aniqlang.
A) 6 B) 5 C) 3 D) 9
149. 0, 0005 mol/l li sulfat kislota eritmasining pH ni aniqlang.
A) 6 B) 5 C) 3 D) 9
150. 10^-5 mol/l li 2 l natriy ishqori eritmasi bor. Shu eritmaning pOH ni aniqlang.
A) 6 B) 5 C) 3 D) 9
151. 10^-5 mol/l li 1 l natriy ishqori eritmasi bor. Shu eritmaning pH ni aniqlang.
A) 6 B) 5 C) 3 D) 9
152. 5*10^-4 mol/l li 500 ml bariy gidroksid eritmasining pOH ni aniqlang.
A) 4 B) 5 C) 3 D) 11
153. 5*10^-4 mol/l li 500 ml bariy gidroksid eritmasining pH ni aniqlang.
A) 4 B) 5 C) 3 D) 11
154. Agar eritmaning pH 4, 2 ga tеng bo‘lsa, eritmadagi sulfat kislotaning molyar kontsеntratsiyasini hisoblab toping.
A) 3, 15*10^-5 B) 3, 55*10^-4 C) 2, 05*10^-4 D) 3, 55*10^-3
155. Agar eritmaning pH 3, 45 ga tеng bo‘lsa, suvli eritmadagi vodorod ionlarining molyar kontsеntratsiyasini hisoblab toping.
A) 1, 55*10^-4 B) 3, 55*10^-4 C) 2, 05*10^-4 D) 3, 55*10^-3
156. 24, 5% li 0, 4 l sulfat kislota (p=1, 25 g/ml) eritmasining hajmi 250 l bo‘lguncha suv bilan suyultirildi. Hosil bo‘lgan eritmaning pH qiymatini hisoblang (=100%).
A) 6 B) 12 C) 2 D) 4
157. 24, 5% li 0, 4 l sulfat kislota (p=1, 25 g/ml) eritmasining hajmi 250 l bo‘lguncha suv bilan suyultirildi. Hosil bo‘lgan eritmaning pOH qiymatini hisoblang (=100%).
A) 6 B) 12 C) 2 D) 4
158. 0, 49% li 4 l sulfat kislota (p=1, 0 g/ml) eritmasining hajmi 36 l bo‘lguncha suv bilan suyultirildi. Hosil bo‘lgan eritmaning pH qiymatini hisoblang (=100%).
A) 6 B) 12 C) 2 D) 4
159. 0, 49% li 4 l sulfat kislota (p=1, 0 g/ml) eritmasining hajmi 36 l bo‘lguncha suv bilan suyultirildi. Hosil bo‘lgan eritmaning pOH qiymatini hisoblang (=100%).
A) 6 B) 12 C) 2 D) 4
160. 2 l 0, 28% li (p=1, 0 g/ml) kaliy gidroksid eritmasini nеcha litr suv bilan suyultirilganda, hosil bo‘lgan eritmaning pH qiymati 11 ga tеng bo‘ladi.
A) 100 B) 98 C) 215 D) 560