Question

Identify the precipitate (if any) that forms when KOH and Cu(NO3)2 are mixed. Express your answer as a chemical formula. Enter noreaction if no precipitate is formed.

Answer 1

According to solubility rules, hydroxides are generally insoluble unless the cation is a Group I element, Group 2 element (starting with Calcium), or ammonium ion. Therefore, this is a double replacement reaction. The equation is such\[2KOH_{(aq)}+Cu(NO_{3})_{2(aq)} \rightarrow 2KNO_{3(aq)}+Cu(OH)_{2(s)}\]