Calculate the \( \mathrm{pH} \) of \( 0.74 \mathrm{~g} / \mathrm{L}...

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Calculate the \( \mathrm{pH} \) of \( 0.74 \mathrm{~g} / \mathrm{L} \) aqueous solution of propane-1,2-diamine. Given : \( \mathrm{pK}_{\mathrm{b}_{1}} \& \mathrm{pK}_{\mathrm{b}_{2}} \) for base is \( 4.18 \& 7.39 \) respectively.
\( \mathrm{P} \)
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