Answer:
The pH is equal to 4.41
Explanation:
Since HClO is a weak acid, its dissociation in aqueous medium is:
HClO ⇄ ClO- + H+
start: 0.05 0 0
change -x +x +x
balance 0.05-x x x
As it is a weak acid it dissociates very little, in its ClO- and H + ions, so the change is negative, where x is a degree of dissociation.
the acidity constant when equilibrium is reached is equal to:
![Ka=\frac{[ClO-]*[H+]}{[HClO]}=\frac{x*x}{0.05-x}=3x10^{-8}](https://tex.z-dn.net/?f=Ka%3D%5Cfrac%7B%5BClO-%5D%2A%5BH%2B%5D%7D%7B%5BHClO%5D%7D%3D%5Cfrac%7Bx%2Ax%7D%7B0.05-x%7D%3D3x10%5E%7B-8%7D)
The 0.05-x fraction can be approximated to 0.05, because the ionized fraction (x) is very small, therefore we have:
clearing the x and calculating its value we have:
![x=3.87x10^{-5}=[H+]=[ClO-]](https://tex.z-dn.net/?f=x%3D3.87x10%5E%7B-5%7D%3D%5BH%2B%5D%3D%5BClO-%5D)
the pH can be calculated by:
![pH=-log[H+]=-log[3.87x10^{-5}]=4.41](https://tex.z-dn.net/?f=pH%3D-log%5BH%2B%5D%3D-log%5B3.87x10%5E%7B-5%7D%5D%3D4.41)
I’m distilled water all of the dissolved substances mixed in water have been removed by evaporation.
The reactant of a chemical reaction is one of the two or more substances in a chemical reaction. This image should help:
This type of energy travels through vibrations on waves = 7. sound energy
This is the energy found in the nucleus of an atom = 9. nuclear energy
This type of energy can be transferred in three different ways = 6. thermal energy
This is the term used when energy changes from one form to another = 10. energy conversions
This has to do with the speed of an object and how much mass it has = 2. kinetic energy
This can be either kinetic or potential and has to do with the energy of position and motion of an object = 1. mechanical energy
This type of energy is stored energy = 3. potential energy
This is radiant energy from the sun = 5. light energy
This is energy that is transferred by the movement of electrons through a conductor = 4. electrical energy
This type of energy is often found in things like batteries or food = 8. chemical energy
hope this helps
