Answer : The value of 
of the weak acid is, 4.72
Explanation :
First we have to calculate the moles of KOH.
Now we have to calculate the value of of the weak acid.
The equilibrium chemical reaction is:
Initial moles 0.25 0.03 0
At eqm. (0.25-0.03) 0.03 0.03
= 0.22
Using Henderson Hesselbach equation :
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%20%5Cfrac%7B%5BSalt%5D%7D%7B%5BAcid%5D%7D)
![pH=pK_a+\log \frac{[HK]}{[HA]}](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%20%5Cfrac%7B%5BHK%5D%7D%7B%5BHA%5D%7D)
Now put all the given values in this expression, we get:
Therefore, the value of of the weak acid is, 4.72
Calcium chloride (CaCl2), an ionic compound
Answer:
The new molarity is 0,22M
Explanation:
A dilution consists of the decrease of concentration of a substance in a solution (the higher the volume of the solvent, the lower the concentration).
We use the formula for dilutions:
C1 x V1 = C2 x V2
0,89 M x 0,723L= C2 x 2.880 L
C2= (0,89 M x 0,723L)/2.880 L
<em>C2= 0,22M</em>
Answer:
To remember the order of taxa in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species):
"Dear King Philip Came Over For Good Soup"
Do Kings Play Chess On Fine Green Silk?
Do Kindly Place Cover On Fresh Green Spring Vegetables
Darn Kernel Panics Crash Our Family Game System
Do Keep Pond Clean Or Froggy Gets Sick
