Hydrogen and its compoundHard
Question
The pKb of CN- is 4.7. The pH of solution prepared by mixing 2.5 mol of KCN of 2.5 mol of HCN in water and making the total volume upto 500 mL is
Options
A.10.3
B.~ 2.4
C.~2.8
D.~ 1.6
Solution
It forms basic buffer
pOH = pKb + log
= 4.7
pH = 14 - 4.7 = 9.3
pOH = pKb + log
= 4.7 pH = 14 - 4.7 = 9.3
Create a free account to view solution
View Solution FreeMore Hydrogen and its compound Questions
Amongst the following, identif the species with an atom in + 6 oxidation state :...(a) H2O2 + O3 → H2O + 2O2 (b) H2O2 + Ag2O → 2Ag + H2O + O2 Role of hydrogen peroxide in the above reactions ...The major product obtained on treatment of CH3CH2CH(F)CH3 with CH3O-/CH3OH is :...Which of the following pair of compounds are having equal value of EAN, but do not obey Sidwick EAN rule....The aqueous solution of the follwoing salts will be coloured in the case fo :...