Answer: By using electrolysis.
Explanation:
Electrolysis is a chemical change produced by sending an electric current through a compound. Electrolysis works because the hydrogen and oxygen ions are held together by an electric attraction.
The action or process of adhering to a surface or object.
1Al2(SO4)3 + 3ZnCl2 → 2AlCl3 + 3ZnSO4
The coefficients represents moles. There is 1 mole of Aluminum Sulfate, 3 moles of Zinc(II) Chloride, 2 moles of Aluminum Chloride, and 3 moles of Zinc(II) Sulfate.
Now add all the coefficients/moles.
9 is the sum of all the coefficients.
Answer: The rate constant is
Explanation ;
Expression for rate law for first order kinetics is given by:
![t=\frac{2.303}{k}\log\frac{a}{a-x}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B2.303%7D%7Bk%7D%5Clog%5Cfrac%7Ba%7D%7Ba-x%7D)
where,
k = rate constant = ?
t = age of sample = 4.26 min
a = initial amount of the reactant = 2.56 mg
a - x = amount left after decay process = 2.50 mg
Now put all the given values in above equation to calculate the rate constant ,we get
![4.26=\frac{2.303}{k}\log\frac{2.56}{2.50}](https://tex.z-dn.net/?f=4.26%3D%5Cfrac%7B2.303%7D%7Bk%7D%5Clog%5Cfrac%7B2.56%7D%7B2.50%7D)
![k=\frac{2.303}{4.26}\log\frac{2.56}{2.50}](https://tex.z-dn.net/?f=k%3D%5Cfrac%7B2.303%7D%7B4.26%7D%5Clog%5Cfrac%7B2.56%7D%7B2.50%7D)
![k=5.57\times 10^{-3}min^{-1}=5.57\times 10^{-3}\times 60s^{-1}=0.334s^{-1}](https://tex.z-dn.net/?f=k%3D5.57%5Ctimes%2010%5E%7B-3%7Dmin%5E%7B-1%7D%3D5.57%5Ctimes%2010%5E%7B-3%7D%5Ctimes%2060s%5E%7B-1%7D%3D0.334s%5E%7B-1%7D)
Thus rate constant is [tex]0.334s^{-1}
Kelvin (K) is the only scale that has a numeral value assigned to absolute zero.