<span>A chemical change has occurred creating a precipitate.
Just had that question on a quiz. XP
Hope I helped :)</span>
Answer: Option (a) is correct.
Explanation:
It is known that electrons hold a negative charge. So, when the negative charge that is electrons are taken out an atom then the number of electrons become less in number as compared to the number of protons.
Hence, the atom attains a positive charge.
An isotope is formed when an atom shows same number of protons and different number of neutrons. So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form.
Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.
PH = - log [concentration of H+]
pH = - log [H+]
pH IS A MEAUSE OF ACIDITY AND BASIDITY OF A SUBSTANCE....
AS ACIDITY OF A SUBSTANCE DEPENDS ON THE IONISATION OF H+
THEREFORE IT IS A MEAUSE...
THE LOWER THE PH VALUE, THE MORE ACIDIC IS THE SUBSTANCE
Explanation:
The integrated rate law for the zeroth order reaction is:
![[A]=-kt+[A]_0](https://tex.z-dn.net/?f=%5BA%5D%3D-kt%2B%5BA%5D_0)
The integrated rate law for the first order reaction is:
![[A]=[A]_0e^{-kt}](https://tex.z-dn.net/?f=%5BA%5D%3D%5BA%5D_0e%5E%7B-kt%7D)
The integrated rate law for the second order reaction is:
![\frac{1}{[A]}=kt+\frac{1}{[A]_0}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5BA%5D%7D%3Dkt%2B%5Cfrac%7B1%7D%7B%5BA%5D_0%7D)
Where,
![[A]](https://tex.z-dn.net/?f=%5BA%5D)
is the active concentration of A at time t
![[A]_0](https://tex.z-dn.net/?f=%5BA%5D_0)
is the active initial concentration of A
t is the time
k is the rate constant
When you are mixing reagents in a separatory funnel it is
important to vent it normally and do so in a method so that is it is not
venting towards anybody. Also be certain to take out the stopper when draining
the lower layer. If you do not take out the stopper, the pressure will not be correct,
and the liquid will not pour out.
