Answer is: Ka for the
monoprotic acid is 3.03·10⁻⁴.
<span>
Chemical reaction: HA(aq) </span>⇄ A⁻(aq) + H⁺<span>(aq).
c(monoprotic acid) = 0.0165 M.
pH = 2.68.
[A</span>⁻] = [H⁺] = 10∧(-2.68).<span>
[A</span>⁻]
= [H⁺] = 0.00209 M; equilibrium concentration.<span>
[HA] = 0.0165 M - 0.00209 M.
[HA] = 0.0144 M.
Ka = [A</span>⁻]·[H⁺] / [HA].<span>
Ka = (0.00209 M)² / 0.0144 M.
Ka = 0.000303 M = 3.03·10</span>⁻⁴<span> M.</span>
Answer:
its outermost shell is completely full making it extremely stable.
Explanation:
It only has two electrons in its outer shell so its valence electron configuration is 1s2. Even though it only has two electrons, it is grouped with elements that have eight valence electrons. Helium is still happy because its outermost shell is completely full making it extremely stable.
Answer:
chemical change
Explanation:
chemical change is when a substance combine with another substance to form a new substance.
Explanation:
develop a short message which you will deliver to the people in this community about application of chemistry in everyday life
I'm not sure, but hope this helps.
5 HIO3 + 4 FeI2 + 25 HCl = 4 FeCl3 + 13 ICl + 15H2O
