Consider a weak base ' B ' of pK_b =5.699. ' x ' mL of 0.02 M HCl and ' y ' mL of 0.02 M weak base ' B ' are mixed to make 100 mL of a buffer of pH 9…

Consider a weak base ' B ' of $\displaystyle \mathrm{pK}_{\mathrm{b}}=5.699$. ' $\displaystyle x$ ' mL of $\displaystyle 0.02$ M HCl and ' y ' mL of $\displaystyle 0.02$ M weak base ' B ' are mixed to make $\displaystyle 100$ mL of a buffer of pH $\displaystyle 9$ at $\displaystyle 25$ °C. The values of ' $\displaystyle x$ ' and ' $\displaystyle y$ ' respectively are: [Given: $\displaystyle \log 2=0.3010, \log 3=0.4771, \log 5=0.699$ ]