The ph value

THE PH VALUE & THE ELECTRICAL CONDUCTIVITY OF A SOLUTION
JOOYEON PARK
AIM
To know how to check the PH value of a solution and to see the relationship between the PH value and the electrical conductivity.
MATERIALS
Universal indicator, litmus, phenolphthalein, water, 6 beakers, wires, light bulbs, test tubes, metal conductors, solutions of: Ba(OH)2, NaOH, Na2CO3, CuSO4, H2SO4, CH3COOH, NH3*H2O
METHOD
Place a drop of each solution and water on universal indicators. Then use the color to find out the pH values of the solutions. After that, put a little amount of Ba(OH)2 and H2SO…