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Unformatted text preview: vi. Start your analysis right away! Time limitation for two samples (5A/5B) is 120 minutes. The one with label is 5A sample . vii. Return the unknown card to the personnel in the stockroom when you finish it! Notes: 5A (the sample with the numerical label) is a pure salt , which means it only contains two (one cation and one anion) or three ( alums , i.e., two cations and SO 42 − ) ions. 1 Sample 5A (PURE SALT) Soluble or Insoluble pH = Possible Ions Existed or Not Description Na + K + NH 4+ Ca 2+ Mg(H 2 O) 62+ Al(H 2 O) 63+ Cl − NO 3− SO 42− HSO 4− OH − CO 32− HCO 3−...
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- Spring '08
- Solubility, Ion, Polyatomic ion, Nitrate, Ion source