Chemistry

Problem

25.0\,\text{mL}

sample of

0.0500\,\text{M}

methylamine

(\mathrm{CH_3NH_2},\;K_b = 4.4\times10^{-4})

is titrated with

0.100\,\text{M}

HCl to the equivalence point. Assuming volumes are additive and the temperature is 25 °C, what is the pH of the resulting solution? a)

7.00

6.06

5.56

8.08