Chemistry, 25.09.2019 01:00 genyjoannerubiera
In part iii, the phenolphthalein indicator is used to monitor the equilibrium shifts of the ammonia/ammonium ion system. the phenolphthalein equilibrium established with water is hph(aq)(colorless) + h2o (l) h3o+ (aq) + ph-(aq)(pink or red). you compared the color of the solutions in three test tubes that initially contained 3 ml of 0.1 m ammonium hydroxide and a few drops of phenolphthalein indicator. in the first test tube, you added 1 m nh4cl dropwise. what color change was observed and what did this color change indicate about the shift in the phenolphthalein equilibrium? a. the solution turned a more intense pink or red color indicating that the phenolphthalein equilibrium shifted to the left, producing more of the pink or red colored hph.
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In part iii, the phenolphthalein indicator is used to monitor the equilibrium shifts of the ammonia/...
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