The ph value

THE PH VALUE & adenylic acid; THE ELECTRICAL CONDUCTIVITY OF A SOLUTION JOOYEON PARK AIM To know how to check the PH value of a part and to see the relationship surrounded by the PH value and the galvanizing conductivity. MATERIALS Universal indicator, litmus strain test, phenolphthalein, water, 6 beakers, wires, sparkling bulbs, test undergrounds, coat conductors, firmness of purposes of: Ba(OH)2, NaOH, Na2CO3, CuSO4, H2SO4, CH3COOH, NH3* piddle METHOD Place a deteriorate of each solution and water on usual indicators. because use the colourize to gravel out the pH condition of the solutions. After that, put a little amount of Ba(OH)2 and H2SO4 into different test pipings ( 2 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 some other of H2SO4), and show up drops of phenolphthalein (one test tube of Ba(OH)2 and another of H2SO4), and see the convince of tinge of two different indicators in two different solutions. therefore effuse CH3COOH and place compeer drops of NaOH into a test tube and mix them. Check whether it resists the change of the pH set. Then shoot comminuted 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 disturb it to the wires that are machine-accessible to 5 different light bulbs.

When connected, winding on the power and correspond the brightness of the light bulbs connected to different solutions. Then establish this again with the mixture of Ba(OH)2 and H2SO4. ANALYSIS For the set 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. in that respect was no color when phenolphthalein was dropped... If you lose to get a wide essay, order it on our website: Orderessay

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