Test+11+-+Alkalinity

﻿Alkalinity

**The alkalinity of water is a measure of how much acid it can**
Neutralize. If any changes are made to the water that would Raise or lower the PH value, alkalinity acts as a buffer, Protecting its life forms from a sudden shift in PH. Having the ability to neutralize acid in a stream is very important In an area what there is a high amount of acid rain and run off.

// ﻿Alkalinity levels vary depending on whir u test for them because //
In the eastern half of the United States will have a higher Level of alkalinity because there is more lime stone then you would Find in the western parts of the U.S but in the areas in the extreme northeastern

Testing Procedure 1. Use a graduated cylinder and add 100ml of the water u are going to use to perform your test (Note water must be at room temp) 2. You need to place your sample on a magnetic stirrer and add a magnetic stirring bar. If you do not have a magnetic stirrer u may use a stirring rod and stir your sample by hand. While you perform your test. 3. You will need to plug your ph sensor into channel 1 of the virner interface. 4. You will now need to open logger pro on a computer and connect the computer to your virnier interface to start collecting data 5. Obtain a clean buret and rinse it with a few ml of M H2SO4. (CAUTION) sulfuric acid is corrosive only use with supervision of your teacher. Next use a unity lamp to attach your buret to the stand. Next fill the buret just above the 0ml mark with M H2SO4 solution

6. Next you will need to remove the PH sensor from the bottle and rinse it off using distilled water. Place the sensor in the beaker with your sample water so that it will not be struck when u are stirring. 7. You are now ready to perform the titration. This process goes faster if one person manipulates and reads the buret while another person operates the computer and enters volumes.

Materials checklist

__ Computer

__ Vernier computer interface

__ Logger Pro

__ Vernier PH sensor

__sampling bottle

__ 25 or 50 mL buret

__ Ring stand

__ Two 250 ml beakers

__ wash bottle with distilled water

__100 ml graduated cylinder

__2 unity lamps

__ Magnetic stirrer and bar (if available) __ 0.0100 M h2SO4 soultion