Question

List at least two chemical reactions that resulted in a yellow, orange, or red precipitate. For these reactions, list the possible chemical name of the precipitate. What do these reactions (and the others similar to them) have in common?

List at least two chemical reactions that resulted in a white precipitate. For these reactions, list the possible chemical name of the precipitate. What do these reactions (and the others with white precipitates) have in common?
Of all the reactions you performed, how many resulted in a precipitate, and how many did not? Make a general statement about the interaction of aqueous ionic compounds, using the term double-displacement reaction.

Answer 1

Two chemical reactions that result in a yellow, orange, or red precipitate include the reaction of lead (II) nitrate with potassium iodide to produce lead iodide, and the reaction of calcium chloride with silver nitrate to produce silver chloride. Both of these reactions are double-replacement reactions. Two chemical reactions that result in a white precipitate involve the reactions of Ca(NO3)2 + KBr and NaOH + FeCl2. All of these reactions involve the exchange of cations and anions in aqueous solution.

Step-by-step explanation:

Two chemical reactions that result in a yellow, orange, or red precipitate are:

1. Lead (II) nitrate solution reacts with a potassium iodide solution to form a precipitate of lead iodide.
2. When calcium chloride solution is mixed with silver nitrate solution, a white precipitate of silver chloride appears.

These reactions have in common that they are double-replacement reactions where the cations and anions in aqueous solution exchange to form a precipitate.

Two chemical reactions that result in a white precipitate are:

1. Ca(NO3)2 + KBr
2. NaOH + FeCl2

These reactions have in common that they are also double-replacement reactions where the cations and anions in aqueous solution exchange to form a white precipitate.

Out of all the reactions performed, the number that resulted in a precipitate is not mentioned.

A general statement about the interaction of aqueous ionic compounds, using the term double-displacement reaction, is that in a double-displacement reaction, the cations and anions in aqueous solution exchange to form a precipitate.