pH of a salt solution of wak acid (pK(a)...

pH of a salt solution of wak acid `(pK_(a) = 4)` & weak base `(pK_(b) = 5)` at `25^(@)C` is :

6.5

7.5

Text Solution

Verified by Experts

The correct Answer is:

`pH = 1/2(pKw + pka- pkb) = 1/2 (14+ 5 - 5) =6.5`

Topper's Solved these Questions

AIIMS 2019 25 MAY MORNING SHIFT
AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|31 Videos
AIIMS 2019 26 MAY MORNING SHIFT
AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|49 Videos

Similar Questions

Explore conceptually related problems

pH of a solution of salt of weak acid and weak base is : pH=1/2pK_w+1/2pK_a-1/2pK_b and that of weak acid and strong base is pH=1/2pK_w+1/2pK_a+1/2logc For a salt of weak acid and weak base having K_a=K_b , the pH at 25^@C will be

For a salt of weak acid and weak base [pK_a- pK_b] would be equal to –

pH of a solution of salt of weak acid and weak base is : pH=1/2pK_w+1/2pK_a-pK_b and that of weak acid and strong base is pH=1/2pK_w+1/2pK_a+1/2logc The pH of 0.1 M sodium acetate ( K_a for CH_3COOH=1.8xx10^(-5) ) is

pH of a solution of salt of weak acid and weak base is : pH=1/2pK_w+1/2pK_a-1/2pK_b and that of weak acid and strong base is pH=1/2pK_w+1/2pK_a+1/2logc pH of 0.1 M solution of ammonium cyanide ( pK_a =9.02 and pK_b =4.76 ) is

pH of 0.01 M aq. Solution of HA is 4. Find the value of pK_(a) of HA at 25^(@)C.

If pK_b gt pK_a then the solution of the salt of weak acid and weak base will be -

A solution contains equimolar concentration of a weak acid HA and its conjugate base A^(-) . pK_(b) of A^(-) is "9." The pH of the solution is

What is the pOH of 0.1 M KB (salt of weak acid and strong base) at 25^(@)C ? (Given : pK_(b) of B^(-) =7)

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2019 26 MAY EVENING SHIFT-CHEMISTRY

At what temperature rate becomes double than at 300 K ? Given lnk =10 ...
Text Solution
|
Assertion : U is state function Reason : T is an intensive propertive
Text Solution
|
Assertion : In a process, if work = 0 then DeltaU = q Reason : q is ...
Text Solution
|
Which alkali metal during flame test will show colour corresponding to...
Text Solution
|
Which pair of elements has maximum electronegativity difference?
Text Solution
|
Which of the following complexes has maximum CFSE?
Text Solution
|
NH(3) reacts with bleaching powder to given :
Text Solution
|
In dimer of phosphorus pentaoxide, in what order number of P-P, P=O & ...
Text Solution
|
For the reaction : A + 2B rarr C + D, the expression of rate of reacti...
Text Solution
|
In a F.C.C arrangement edge length of unit cell is a, which of the fol...
Text Solution
|
For the endothermic reactionA(2) rarr 2A, which of the following will ...
Text Solution
|
Difference in ionization energy & Ionsation enthalpy is :
Text Solution
|
In Fe(CO) is Cr(CO)(6), how many CO ligands can be replaced by NO?
Text Solution
|
Which of the following has maximum iron content?
Text Solution
|
Calculate Molarity of a 63% W/W HNO(3) solution if density is 5.4 g/mL...
Text Solution
|
pH of a salt solution of wak acid (pK(a) = 4) & weak base (pK(b) = 5) ...
Text Solution
|
Radius of 1^(st) orbit of H & some orbit of Be^(3+) is same . Energy o...
Text Solution
|
Select the correct statement regarding shapes of PCl(5), BrF(5) & IF(7...
Text Solution
|
Which of the following is incorrect about K(2)Cr(2)O(7) ?
Text Solution
|
The conductivity of a 0.05 M solution of a weak monobasic acid is 10^(...
Text Solution
|