#
**Problem**: Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.210 M pyridine, C5H5N(aq) with 0.210 M HBr(aq) (Kb= 1.7 x 10-9)after addition of 25.0 mL of HBr

###### FREE Expert Solution

###### FREE Expert Solution

$\mathbf{mol}\mathbf{}{\mathbf{C}}_{\mathbf{5}}{\mathbf{H}}_{\mathbf{5}}\mathbf{N}\mathbf{=}\mathbf{25}\mathbf{}\overline{)\mathbf{mL}\mathbf{}{\mathbf{C}}_{\mathbf{5}}{\mathbf{H}}_{\mathbf{5}}\mathbf{N}}\left(\frac{{10}^{-3}\overline{)L{C}_{5}{H}_{5}N}}{1\overline{)\mathrm{mL}{C}_{5}{H}_{5}N}}\right)\left(\frac{0.210\mathrm{mol}{C}_{5}{H}_{5}N}{1\overline{)L{C}_{5}{H}_{5}N}}\right)\mathbf{=}$**5.25×10 ^{-3 }mol**

$\mathbf{mol}\mathbf{}\mathbf{HBr}\mathbf{=}\mathbf{25}\mathbf{}\overline{)\mathbf{mL}\mathbf{}\mathbf{HBr}}\mathbf{\left(}\frac{{\mathbf{10}}^{\mathbf{-}\mathbf{3}}\mathbf{}\overline{)\mathbf{L}\mathbf{}\mathbf{HBr}}}{\mathbf{1}\overline{)\mathbf{}\mathbf{mL}\mathbf{}\mathbf{HBr}}}\mathbf{\right)}\mathbf{\left(}\frac{\mathbf{0}\mathbf{.}\mathbf{210}\mathbf{}\mathbf{mol}\mathbf{}\mathbf{HBr}}{\mathbf{1}\mathbf{}\overline{)\mathbf{L}\mathbf{}\mathbf{HBr}}}\mathbf{\right)}\mathbf{=}$**5.25×10 ^{-3 }mol**

###### Problem Details

Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.210 M pyridine, C_{5}H_{5}N(aq) with 0.210 M HBr(aq) (Kb= 1.7 x 10^{-9})

after addition of 25.0 mL of HBr

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Weak Base Strong Acid Titrations concept. You can view video lessons to learn Weak Base Strong Acid Titrations Or if you need more Weak Base Strong Acid Titrations practice, you can also practice Weak Base Strong Acid Titrations practice problems .

How long does this problem take to solve?

Our expert Chemistry tutor, Dayana took 9 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Del Valle's class at NOTRE DAME.