Final answer:
The correct balanced chemical equation for the reaction between calcium nitrate and ammonium fluoride forming calcium fluoride is a) Ca(NO₃)₂ + 2NH₄F → CaF₂ + 2NH₄NO₃.
Step-by-step explanation:
The reaction of calcium nitrate (Ca(NO₃)₂) with ammonium fluoride (NH₄F) to form calcium fluoride (CaF₂) is represented by the balanced chemical equation:
a) Ca(NO₃)₂ + 2NH₄F → CaF₂ + 2NH₄NO₃
Each calcium ion (Ca²⁺) requires two fluoride ions (F⁻) to form calcium fluoride, while each nitrate ion (NO₃⁻) pairs with an ammonium ion (NH₄⁺) to form ammonium nitrate. The correct option that represents this balanced equation is option a), as it follows the stoichiometry of the reactants and products, ensuring that the number of each type of atom is equal on both sides of the equation.