Answer is: pH of hydrazine conjugate acid is 4.088.
Chemical reaction: N₂H₅⁺ + H₂O ⇄ N₂H₄ + H₃O⁺.
[N₂H₅⁺] = 2.0 M.
[N₂H₄] = [H₃O⁺] = x.
Kb(N₂H₄) = 3.0·10⁻⁶.
Kb·Ka = 1.00·10⁻¹⁴.
Ka(N₂H₅⁺) = 1.00·10⁻¹⁴ ÷ 3.0·10⁻⁶.
Ka = 3.33·10⁻⁹.
Ka = [N₂H₄]·[H₃O⁺] / [N₂H₅⁺].
3.33·10⁻⁹ = x² / 2.0 M.
x = [H₃O⁺] = √3.33·10⁻⁹ · 2.0 M.
[H₃O⁺] = 8.1·10⁻⁵ M.
pH = -log[H₃O⁺].
pH = -log(8.1·10⁻⁵ M).
pH = 4.088.
In an exothermic reaction, heat is transferred to the surrounding.
Hope this helps, have a great day ahead!
Answer:
The answer is granitic or felsic rocks
Explanation:
Felsic is a term used in geology applied to silicate minerals, magmas and rocks, rich in light elements such as silicon, oxygen, aluminum, sodium and potassium (describs igneous rocks that are relatively rich in elements that form feldspar and quartz). This term is a combination of the words "feldspar" and "silica". Felsic minerals are generally light in color and have a specific gravity of less than 3. The most common felsic minerals are quartz, muscovite, alkaline feldspars (eg orthoclase) and feldspars from the plagioclase series. The most common felsic rock is granite. At the opposite end of the rock spectrum are mafic (rich in iron) and ultramafic (rich in magnesium) rocks and minerals.
Answer: The vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor that is in thermodynamic equilibrium with the condensed phase (solid or liquid) at a given temperature in a closed system. The equilibrium vapor pressure is an indication of the evaporation rate of a liquid.
Explanation:
