Question

Write down the steps which correctly describe the steps required to decide whether or not a precipitate forms when two aqueous solutions are mixed.

Answer 1

The correct question is as follows.

place the steps required to determine whether or not a precipitate forms when two solutions are mixed in the correct order.

-consider possible cation-anion combinations

-note the ions present in the reactions

-use the solubility rules to determine whether or not either of the combinations gives an insoluble salt

Explanation:

A precipitate is an insoluble substance formed due to chemical reaction between two aqueous solutions. But it is not necessary that two aqueous solutions will always give an insoluble solid substance on chemical reaction with each other.

For e.g. $NaCl(aq) + AgNO_3(aq) \rightarrow NaNO_3(aq) + AgCl(s)$

Here, AgCl is the precipitate formed.

Hence, correct steps that are required to decide whether or not a precipitate forms when two aqueous solutions are mixed:

1). note the ions present in the reactants

2). consider possible cation-anion combinations

3). use the solubility rules to determine whether or not either of the combinations gives an insoluble salt