Answer:
A double-replacement precipitation reaction.
The floating film is called a precipitate.
Explanation:
precipitation reaction is a type of double-replacement reaction that occurs when two ionic compounds are dissolved in water and form a new ionic compound that does not dissolve; this new compound falls out of solution as a solid precipitate.
Answer:
A)Double Replacement reaction
B) Precipitate
Explanation:
The situation given in question statement refers to double replacement reaction in chemistry.
As the name indicates, it is basically a precipitation reaction in which a precipitate is formed when the cations from one of the reactants react with the anions from the other reactant to produce an ionic product that is not soluble in the solution and it appears on the surface like a thin film of solids
