What will be \( \mathrm{pH} \) of mixture of two weak acids? \( \mathrm{P} \) \( \mathrm{HA}_{1}...

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What will be \( \mathrm{pH} \) of mixture of two weak acids?
\( \mathrm{P} \)
\( \mathrm{HA}_{1}\left(0.1 \mathrm{M}, \mathrm{Ka}_{1}=10^{-5}\right) \)
W
\[
\mathrm{HA}_{2}\left(0.2 \mathrm{M}, \mathrm{Ka}_{2}=10^{-9}\right)
\]
(1) 2
(2) 3
(3) 4
(4) 5
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