Analysis of the well water supplied to Michigan state university showed the foll

Question

Analysis of the well water supplied to Michigan state university showed the following concentrations: Bromide is the only other ion known to be present in this water, but as a result of an oversight, its concentration was not determine. Estimate the bromide concentration and determine the gmw, gew, ppm, morality, normality, mole fraction and mg/L as CaCo3 of each constituent. The concentration of So2, a gas which reacts in the atmosphere to form sulfuric acid, measured to be 80 mu g/m3 when sampled at 15 degree C and 101.325 kPa. What is the concentration in ppm?

Explanation / Answer

There are multiple questions here. . i am allowed to answer only 1 at a time. I will answer question the question with maximum subpart for you.Please ask other as different question.
I am answering question 4 as it has maximum subpart and i think by answering this I will be able to help you with 4 parts without breaking chegg policy of one question at a time

4.
a)
Let initial amount be 100 M
[Ao]= 100 M

40 % completed,so remaining is 60%,
[A]=60 M

t = 50min = 50*60 s =3000 s

use:
[A] = [ Ao]*e^(-k*t)
60 = 100 * e^(-k* 3000)
k= 1.7*10^-4 s-1

b)
[Ao]= 100 M
80 % completed,so remaining is 20%,
[A]=20 M

use:
[A] = [ Ao]*e^(-k*t)
20 = 100 * e^(-1.7*10^-4 * t)
t= 9467.3 s
= 157.8 min

c)
For 1st order reaction, rate law is:
rate = k[A]
    = 1.7*10^-4 *1*10^-3
    = 1.7*10^-7 M/s

d)
half life= 0.693/k
= 0.693/(1.7*10^-4 )
= 4076.5 s
= 67.9 minutes

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.