A) 8.73
B) 8.32,
C) 6.73
D) 6.32
Correct Answer: B
Solution :
\[\text{HCO}_{3}^{-}\]is proton acceptor as well as proton donor and therefore it is amphiprotic. For such case \[pH=\frac{p{{k}_{1}}+p{{k}_{2}}}{2}\] \[HCO_{3}^{-}\]undergoes hydrdysis and form alkaline solution. \[HCO_{3}^{-}+{{H}_{2}}O{{H}_{2}}C{{O}_{3}}+O{{H}^{-}}\] \[HCO_{3}^{-}\]can also ionise to form acidic solution. \[HCO_{3}^{-}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+CO_{3}^{2-}\] pH of the salt is, \[pH=\frac{p{{k}_{1}}+p{{k}_{2}}}{2}\] \[=\frac{6.38+10.26}{2}=8.32\]You need to login to perform this action.
You will be redirected in
3 sec