Answer : The pH of the solution is, 9.18
Solution : Given,
Concentration (c) = 0.025 M
Base dissociation constant =
The equilibrium reaction for dissociation of (weak base) is,
initially conc. c 0 0
At eqm.
First we have to calculate the concentration of value of dissociation constant .
Formula used :
Now put all the given values in this formula ,we get the value of dissociation constant .
By solving the terms, we get
Now we have to calculate the concentration of hydroxide ion.
Now we have to calculate the pOH.
Now we have to calculate the pH.
Therefore, the pH of the solution is, 9.18