Question

to determine the theoretical yield from a given chemical reaction, you need to ______.
perform a separation technique such as filtration to isolate the product of a chemical reaction
use a balance to weight the final product at the end of an experiment
use the balanced chemical equation and g of a product to calculate the g of a reactant
use the balanced chemical equation and g of a reactant to calculate the g of a product

Explanation:

To find theoretical yield, we use stoichiometry. This involves the balanced chemical equation and converting grams of reactant to grams of product (mole - mole ratios from balanced equation, then mass calculations). Let's analyze each option:

• Option 1: Performing separation (like filtration) is for isolating product, not calculating theoretical yield.
• Option 2: Weighing final product gives actual yield, not theoretical.
• Option 3: The process here is reversed (calculating reactant from product), which is not for theoretical yield.
• Option 4: Using balanced equation and grams of reactant to calculate grams of product is the stoichiometric process for theoretical yield.

Answer:

The correct option is the one with "use the balanced chemical equation and g of a reactant to calculate the g of a product" (the fourth option in the list).