Question

( 33.100 mathrm{ml} quad 0.2 mathrm{M} mathrm{M} / mathrm{l}_{3} mathrm{COOH}+100 mathrm{ml} ) o ( 2 mathrm{M} )
Now, we know for a rivixtuse of weak acid
+ strong bace ( begin{aligned} P H &=frac{1}{2}left(p k_{h}+p k_{a}+log cright) Rightarrow p H &=frac{1}{2}(14+4,74+log 0.1) Rightarrow p H &=frac{1}{2}(18.74-1)=frac{17.74}{2} Rightarrow p H &=8.87 end{aligned} )

# COMO 33. The pH of a solution obtained by mixing 100 ml of 0.2 M CH,COOH with 100 ml of 0.2 M NaOH will be (PK for CH,COOH = 4.74 and log 2 = 0.301) (1) 4.74 (2) 8.87 (3) 9.10 (4) 8.57

Solution