Question

Balance the equationFe_2(SO_4)3+K(SCN⇒K_3Fe(SCN)↓6+K_2SO_4.

A. Fe_2(SO_4)3 + 6 KSCN → K_3Fe(SCN)6 + 3 K_2SO_4.
B. Fe_2(SO_4)3 + 3 KSCN → K_3Fe(SCN)6 + 2 K_2SO_4
C. Fe_2(SO_4)3 + 6 KSCN → KFe(SCN)6 + 3 K_2SO_4
D. Fe_2(SO_4)3 + 6 KSCN → K_3Fe(SCN)6 + 6 K_2SO_4

Answer 1

The balanced chemical equation(A) is Fe2(SO4)3 + 6 KSCN → K3Fe(SCN)6 + 3 K2SO4, where the stoichiometry reflects an equal number of each atom on both sides of the equation.

Step-by-step explanation:

To balance the given chemical equation, we need to ensure that there are equal numbers of each type of atom on both sides of the equation and the same overall electric charge on both sides. The correct equation from the provided options is:

Fe_2(SO_4)3 + 6 KSCN → K_3Fe(SCN)6 + 3 K_2SO_4.

This can be deduced by breaking down the reaction into its component ions and ensuring that the stoichiometry is correct. Each iron (III) sulfate reacts with six potassium thiocyanate to produce one potassium hexathiocyanatoferrate(III) and three potassium sulfate. This balances the atoms of Fe, S, K, C, N, and O across the equation.