A) \[0.23\]and \[0.023\]
B) \[0.46\]and \[0.046\]
C) \[2.3\] and \[0.23\]
D) \[4.6\] and \[0.46\]
Correct Answer: A
Solution :
[a] (i) Buffer capacity \[(\beta )=2.303\,\left[ [{{H}^{\oplus }}]+[O{{H}^{\Theta }}] \right]\] \[=2.303({{10}^{-1}}+{{10}^{-13}})\] \[=0.23\] (ii) Buffer capacity \[(\beta )\] for \[HCl\]with \[pH=2\] \[=2.303({{10}^{-2}}+{{10}^{-12}})\] \[=0.023.\]
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