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AP Chem Unknown Substance Lab

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Grace Park Partner: Kanika Gulia Period 1 Unknown Substance Lab Materials?: ? Pipets ? Test tubes ? Test tube rack ? Beakers with unknown substances ? Waste beaker ? Phenolphthalein ? AgNO3 ? Datahub ? Conductivity meter ? pH meter Procedure?: 1. Put 40 drops of each solution into its respective test tube (everything is numbered from 1 to 6). 2. Put one drop of phenolphthalein in each test tube to determine which solutions are basic (the indicator turns pink if the the solution is basic). 3. Use the conductivity meter with the Datahub to determine the conductivity of each solution and record the values in the data table. 4. Use the pH meter with the Datahub to determine the pH value of each solution.

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