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Ostwald Dilution Law Mathematical Interpretation

0.1 mole of H...

Question

0.1 mole of HCl is added to 2 litres of buffer solution. The decreases in pH of that buffer by 0.5. Then the buffer capacity is

A

0.5

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B

0.2

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C

0.1

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D

2

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Solution

The correct option is C
0.1

Buffer capacity $ϕ$ = $\frac{\frac{N o . m o l e s o f s t r o n g a c i d}{s t r o n g b a s e a d d e d p e r l i t e r o f b u f f e r}}{c h a n g e i n P^{H}}$

$ϕ$ = $\frac{\frac{0.1}{2}}{0.5}$ = $0.1$

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