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:
newtons first law
Explanation:
an object in motion will stay in motion unless acted upon by an outside force
Answer:
The equation that tends to answer this question, (omitting the presence of water) is:
Fe (ClO4) 3 -----------> Fe (+3) + ClO4 (-1)
Explanation:
The numbers that we see in parentheses would be the oxidation numbers of each compound, in the case of iron, iron acts with an oxidation number of +3, and in the case of perchlorate it would be -1.
The stoichiometric name according to IUPAC (most widely used chemical nomenclature) is iron perchlorate.
A concave<span> surface, </span>structure<span>, or line. tr.v. con·caved, concaving, con·caves.
hope that helped</span>