What is the first step you must take to solve a stoichiometric problem?

• A. Write and balance the chemical equation for the reaction.
• B. Identify the limiting reactant.
• C. Convert the given quantities to moles.
• D. Calculate the theoretical yield.

Answer: (A)

Verified step by step guidance

1. Begin by writing the chemical equation for the reaction involved in the stoichiometric problem. This provides a clear representation of the reactants and products.
2. Balance the chemical equation to ensure the law of conservation of mass is satisfied, meaning the number of atoms of each element is the same on both sides of the equation.
3. Once the equation is balanced, you can use the mole ratios from the coefficients in the balanced equation to relate quantities of reactants and products.
4. After balancing, convert the given quantities (usually masses or volumes) of reactants or products into moles using molar masses or molar volumes as appropriate.
5. With the balanced equation and mole quantities, you can then identify the limiting reactant, which determines the maximum amount of product that can be formed.