Is it advisable to use conc. HCI in place of dilute HCI for preparing original solution

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks whether it is advisable to use concentrated hydrochloric acid (HCl) instead of dilute HCl for preparing an original solution in the context of qualitative inorganic salt analysis.

2. **Role of HCl in Precipitation Reactions**: Hydrochloric acid is often used in qualitative analysis to precipitate certain ions. In this case, we are particularly interested in lead ions (Pb²⁺) and their precipitation as lead(II) chloride (PbCl₂).

3. **Using Concentrated HCl**: While concentrated HCl can be used to prepare the solution, it is important to note that using concentrated HCl may lead to the formation of complexes. For example, lead ions may form soluble complexes with chloride ions when concentrated HCl is used.

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