<u>Answer:</u> The half life of the reaction is 593.8 seconds
<u>Explanation:</u>
We are given:
Rate constant = ![0.0016mol/L.s](https://tex.z-dn.net/?f=0.0016mol%2FL.s)
The formula for determining the unit of 'k' is:
![\text{Unit}=\frac{(Concentration)^{1-n}}{Time}](https://tex.z-dn.net/?f=%5Ctext%7BUnit%7D%3D%5Cfrac%7B%28Concentration%29%5E%7B1-n%7D%7D%7BTime%7D)
where, n = order of reaction
The unit of concentration is, M or mole/L
The unit of time is, second or 's'
Evaluating the value of 'n' from above equation:
![mol.L^{-1}s^{-1}=\frac{(mol/L)^{1-n}}{s}\\\\n=0](https://tex.z-dn.net/?f=mol.L%5E%7B-1%7Ds%5E%7B-1%7D%3D%5Cfrac%7B%28mol%2FL%29%5E%7B1-n%7D%7D%7Bs%7D%5C%5C%5C%5Cn%3D0)
The reaction is zero order reaction.
The equation used to calculate half life for zero order kinetics:
![t_{1/2}=\frac{[A_o]}{2k}](https://tex.z-dn.net/?f=t_%7B1%2F2%7D%3D%5Cfrac%7B%5BA_o%5D%7D%7B2k%7D)
where,
k = Rate constant = ![0.0016mol/L.s](https://tex.z-dn.net/?f=0.0016mol%2FL.s)
= initial concentration = 1.90 mol/L
Putting values in above equation, we get:
![t_{1/2}=\frac{1.90mol/L}{2\times 0.0016mol/L.s}=593.8s](https://tex.z-dn.net/?f=t_%7B1%2F2%7D%3D%5Cfrac%7B1.90mol%2FL%7D%7B2%5Ctimes%200.0016mol%2FL.s%7D%3D593.8s)
Hence, the half life of the reaction is 593.8 seconds
The hydroxide ion concentration [OH-] in an aqueous solution is 6.66 x 10⁻⁹ M
Experimental measurements of the pKw of water at 25ºC yielded a result of 14.0. The same method used to determine the pKa of all other water-soluble compounds that can function as acids in aqueous solution can also be used to determine this value from the examination of thermodynamic or electrochemical data for these aqueous solutions.
Water has a pkw=14
So it can be represented as,
[H+] [OH-] = 1×10^-14
Given [H+] = 1. 5×10^−6
So, [OH-] = (1*10^-14) / ( 1.5*10^-6)
= 6.66 x 10⁻⁹ M
To know more about Aqueous Solution refer:
brainly.com/question/19587902
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Answer:
"A statement that can be verified by an experiment"
Explanation:
A hypothesis is an idea or explanation that you then test through study and experimentation.
I think the Atomic Mass is the answer
Probably protons because when it changes it becomes a whole new element