i believe it is 173 and 145.
Answer:
The correct option is d
Step-by-step explanation:
From the question we are told that
The concentration of HF is [HF] = 0.6 M
The concentration of NaF is ![[NaF ] = 0.2 M](https://tex.z-dn.net/?f=%5BNaF%20%5D%20%3D%20%200.2%20M)
The Ka of HF is
Generally HF(Hydrogen fluoride ) is ionized as follows
Generally NaF(Sodium fluoride ) is ionized as follows
Generally the from Henderson-Hasselbalch equation the pH of the buffer is mathematically represented as
![pH = pKa + log [\frac{[NaF ]}{HF} ]](https://tex.z-dn.net/?f=pH%20%20%3D%20%20pKa%20%20%2B%20log%20%5B%5Cfrac%7B%5BNaF%20%5D%7D%7BHF%7D%20%5D)
=> ![pH = -log(K_a) + log [\frac{[NaF ]}{HF} ]](https://tex.z-dn.net/?f=pH%20%20%3D%20%20-log%28K_a%29%20%20%2B%20log%20%5B%5Cfrac%7B%5BNaF%20%5D%7D%7BHF%7D%20%5D)
=> ![pH = -log(6.8 *10^{-4}) + log [\frac{[0.2 ]}{0.6} ]](https://tex.z-dn.net/?f=pH%20%20%3D%20%20-log%286.8%20%2A10%5E%7B-4%7D%29%20%20%2B%20log%20%5B%5Cfrac%7B%5B0.2%20%5D%7D%7B0.6%7D%20%5D)
=> ![pH = 2.69](https://tex.z-dn.net/?f=pH%20%20%3D%20%202.69)
Answer:
m
Step-by-step explanation:
m * n^0
Anything to the zero power is 1
m* (1)
m
Answer:
x= 9* sqrt(3)
Step-by-step explanation:
Hope this helps