Answer:
Lead (II) sulphate,

Step-by-step explanation:
A precipitate reaction is one involving two aqueous reactants in which one of the products is a solid or a precipitate. It can also be defined as a reaction involving the formation of insoluble salt from mixture of two soluble salts.
The equation of reaction involving
and
is as follows:

The precipitate formed in this case is
because it is the only insoluble one of the two products.
Hence the white color precipitate that forms is
