Answer:
pH = 9.29
Explanation:
- C5H5N + H2O ↔ C5H5NH+ + OH-
∴ pKb = 8.75 = - Log Kb
⇒ Kb = 1.7783 E-9 = [OH-][C5H5NH+]/[C5H5N]
mass balance:
⇒ <em>C</em> C5H5N = 0.215 M = [ C5H5N ] + [C5H5NH+]
charge balance:
⇒ [OH-] = [C5H5NH+]
⇒ Kb = 1.7783 E-9 = [OH-]² / ( 0.215 - [OH-] )
⇒ [ OH-]² + 1.7783 E-9[OH-] - 3.8233 E-10 = 0
⇒ [OH-] = 1.9552 E-5 M
⇒ pOH = 4.708
∴ 14 = pH + pOH
⇒ pH = 9.29
Answer:
a. H20,because it experiences hydrogen bonding.
<span>Hey Jose! Thanks for asking a question here on Brainly.
⚪ Potassium
</span><span>⚪ Magnesium
</span><span>⚪ Sodium (aka Na)
</span><span>⚪ Lithium (aka Li)
These are all atoms that are likely to lose electrons in order to form cations. Hope this helps. -UF aka Nadia</span>
