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Qualitative Analysis Introduction: Qualitative analysis is used in the determination of the identity of a substance. It is different from quantitative analysis, which deals with the determination of the amount of a substance. In this experiment, qualitative analysis techniques are used to determine whether or not a sample contains a certain ion. When using this method, an unknown and a reactant are mixed. The result of the reaction leads to a conclusion about the presence …

…uld form but then be dissolved without ever being seen. This would also result in an incorrect flow chart and an incorrect identification of the unknown ions. Another source of error could occur in making or following the flow chart. Incorrect reasoning when designing the flow chart will make it difficult to correctly identify the ions in the unknown, and not following the flow chart correctly would obviously cause error in the final results.