A) \[0.1\,mol\,d{{m}^{-\,3}}N{{H}_{4}}OH\,\text{and}\,\text{0}\text{.1}\,mol\,d{{m}^{-\,3}}HCl\]
B) \[0.5\,mol\,d{{m}^{-\,3}}N{{H}_{4}}OH\,\text{and}\,\text{0}\text{.1}mol\,d{{m}^{-\,3}}HCl\]
C) \[0.1\,mol\,d{{m}^{-\,3}}N{{H}_{4}}OH\,\text{and}\,\text{0}\text{.5}\,mol\,d{{m}^{-\,3}}HCl\]
D) \[0.1\,mol\,d{{m}^{-\,3}}C{{H}_{3}}COONa\,\text{and}\,\text{0}\text{.1}\,mol\,d{{m}^{-\,3}}NaOH\]
Correct Answer: C
Solution :
[c]| Buffer solutions are aqueous solutions consisting of a mixture of a weak acid and its conjugate base or vice-versa. |
| When the concentration of \[N{{H}_{4}}OH\](weak base) is higher than the strong acid \[(HCl),\] a mixture of weak base and its conjugate acid is obtained, which acts as basic buffer. |
| \[\begin{matrix} {} & N{{H}_{4}}OH+ & HCl\xrightarrow{{}} & N{{H}_{4}}Cl+ & {{H}_{2}}O \\ Initially & 0.1\,M & 0.05M & 0 & 0 \\ After\,reaction & 0.05M & 0 & 0.05 & 0 \\ \end{matrix}\] |
You need to login to perform this action.
You will be redirected in
3 sec
