Chloe’s teacher gives her and her lab partner soil samples from different parts of the city: the park, the area next to a pond,
1 answer:
You might be interested in
Answer:
The answer is 12.35
Explanation:
From the question we are given that the concentration of is
Generally The rate equation is given as
and the rate constant has a value
Substituting and making [] the subject we have
Multiply the value by as instructed from the question we have
Answer =
Hence the answer in 2 decimal places is 12.35
Answer:
a) 3.969
b) 3.489
Explanation:
a) Calculate the pk, value of the acid HA
PH of salt hydrolysis
P = 1/2 ( pkw + pka + logC )
8.7 * 2 = 14 + log ( 0.27 ) + Pka
∴ Pka = 3.9686 ≈ 3.969
b) Calculate the PH of a solution containing 0.3 M HA and 0.1 M NaA
PH = Pka + log ( salt / acid )
= 3.9686 + log ( 0.1 / 0.3 )
= 3.9686 - 0.48 = 3.489