The ph value

THE PH VALUE & international ampere; THE ELECTRICAL CONDUCTIVITY OF A SOLUTION JOOYEON PARK AIM To know how to check the PH value of a thaw and to see the relationship in the midst of the PH value and the galvanising conductivity. MATERIALS Universal indicator, litmus rivulet, phenolphthalein, water, 6 beakers, wires, decrepit bulbs, test undergrounds, surface conductors, solvents of: Ba(OH)2, NaOH, Na2CO3, CuSO4, H2SO4, CH3COOH, NH3* body of water METHOD Place a deteriorate of each solution and water on general indicators. because use the colourize to view out the pH eagerness of the solutions. After that, put a little amount of Ba(OH)2 and H2SO4 into antithetical test electron tubes ( two test tubes of Ba(OH)2 and two test tubes of H2SO4). Place drops of litmus to two test tubes (one test tube of Ba(OH)2 and other of H2SO4), and out drops of phenolphthalein (one test tube of Ba(OH)2 and another of H2SO4), and see the adjustment of colourize of two different indicators in two different solutions. hence effuse CH3COOH and place twain drops of NaOH into a test tube and mix them. Check whether it resists the change of the pH set. Then pour out delicate water and the solutions of H2SO4, Ba(OH)2, CH3COOH, NH3*H2O into the beakers (each solution in a beaker). And place a metal conductor in the beakers with solutions and have-to doe with it to the wires that are connected to 5 different light bulbs.

When connected, braid on the power and equalize the brightness of the light bulbs connected to different solutions. Then raise this again with the mixture of Ba(OH)2 and H2SO4. ANALYSIS For the value of pH, we got Ba(OH)2=13, NaOH=12, Na2CO3=12, CuSO4=3, H2SO4=1, CH3COOH=4, NH3*H2O=11 and pure water=7. The color of litmus changed to red when it met H2SO4 and changed to blue when it met Ba(OH)2. thither was no color when phenolphthalein was dropped... If you neglect to get a full phase of the moon essay, order it on our website: Ordercustompaper.com

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