According to the reaction equation:
and by using ICE table:
CN- + H2O ↔ HCN + OH-
initial 0.08 0 0
change -X +X +X
Equ (0.08-X) X X
so from the equilibrium equation, we can get Ka expression
when Ka = [HCN] [OH-]/[CN-]
when Ka = Kw/Kb
= (1 x 10^-14) / (4.9 x 10^-10)
= 2 x 10^-5
So, by substitution:
2 x 10^-5 = X^2 / (0.08 - X)
X= 0.0013
∴ [OH] = X = 0.0013
∴ POH = -㏒[OH]
= -㏒0.0013
= 2.886
∴ PH = 14 - POH
= 14 - 2.886 = 11.11
Protons, neutrons, and electrons
The Highlands consist of constantly erupting volcanoes.
The Highlands formed by uplifting volcanic activity.
<h3> E
rupting volcanoes</h3>
The Highlands consist of constantly erupting volcanoes and the lands formed by uplifting of regions due to volcanic activity are the factors that are responsible for the unusual ecosystem of the Ethiopian Highlands.
<h3>Causes of unusual ecosystem</h3>
There are eight types of ecosystem are present in Ethiopia. All these ecosystems are formed due to Volcanoes and volcanic activity which make the unusual ecosystems in the highlands of Ethiopia so we can conclude that volcanoes and volcanic activity is responsible for unusual ecosystems in Ethiopia.
Learn more about ecosystem here: brainly.com/question/15971107
Learn more: brainly.com/question/26131844
Answer:
convalent bonds are stronger than ionic bond
Explanation:
it's a sharing of bond
