In the equation:
Fe(NO©ý)©ý (aq) + 3KSCN (aq) ¡æFeSCN©ý (aq) + 3KNO©ý (aq)
Why do two aqueous solutions form? What is this calle? Is there a seconday reaction?
In this equation, Fe(NO₃)₃ (aq) and KSCN (aq) react to form FeSCN²⁺ (aq) and KNO₃ (aq). Two aqueous solutions are formed because both Fe(NO₃)₃ and KSCN are dissolved in water, making them aqueous (denoted by "(aq)"). When they react, the products FeSCN²⁺ and KNO₃ also remain dissolved in water, resulting in two separate aqueous solutions.
This type of reaction, where two aqueous solutions react to form two different aqueous solutions, is called a double displacement or double replacement reaction. In this case, the Fe³⁺ ions from Fe(NO₃)₃ and the SCN⁻ ions from KSCN switch partners to form FeSCN²⁺ while releasing K⁺ and NO₃⁻ ions.
Based on the given equation, there is no mention of a secondary reaction. A secondary reaction can occur when the products of the first reaction further react with other substances in the solution, leading to additional chemical changes.