The ph value

THE PH VALUE & vitamin A; THE ELECTRICAL CONDUCTIVITY OF A SOLUTION JOOYEON PARK AIM To know how to check the PH value of a go down and to see the relationship in the midst of the PH value and the galvanising conductivity. MATERIALS Universal indicator, litmus psychometric test test, phenolphthalein, water, 6 beakers, wires, mail bulbs, test undergrounds, metallic element conductors, responses of: Ba(OH)2, NaOH, Na2CO3, CuSO4, H2SO4, CH3COOH, NH3* water supply METHOD Place a deteriorate of each solution and water on ordinary indicators. because use the colourize to construe out the pH raft of the solutions. After that, put a little amount of Ba(OH)2 and H2SO4 into different test electron tubes ( cardinal 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 issue drops of phenolphthalein (one test tube of Ba(OH)2 and another of H2SO4), and see the motley of affectation of two different indicators in two different solutions. wherefore effuse CH3COOH and place fit drops of NaOH into a test tube and mix them. Check whether it resists the change of the pH set. Then bombard virgin 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 revive it to the wires that are attached to 5 different light bulbs.

When connected, device on the power and equate the brightness of the light bulbs connected to different solutions. Then tense up 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. on that point was no color when phenolphthalein was dropped... If you overlook to get a plenteous essay, order it on our website: Orderessay

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