ii)Pb(NO3)2 + ---------- NaCl ---> ------------- + -------------

The reaction you're referring to is a double displacement reaction. Here's how it works:

Pb(NO3)2 + 2NaCl --> PbCl2 + 2NaNO3

Here's the step-by-step explanation:

1. The reactants are lead nitrate (Pb(NO3)2) and sodium chloride (NaCl).

2. In a double displacement reaction, the positive ions of the two compounds exchange places.

3. The positive ion of lead nitrate (Pb2+) reacts with the negative ion of sodium chloride (Cl-) to form lead chloride (PbCl2).

4. Similarly, the positive ion of sodium chloride (Na+) reacts with the negative ion of lead nitrate (NO3-) to form sodium nitrate (NaNO3).

5. Since there are 2 nitrate ions in lead nitrate and 2 chloride ions in sodium chloride, we need to balance the equation by placing a 2 in front of NaCl and NaNO3.

So, the balanced chemical equation is:

Pb(NO3)2 + 2NaCl --> PbCl2 + 2NaNO3