Question

this passage describes a chemical reaction. read the passage. then, follow the instructions below.
aspirin (c₉h₈o₄) is a drug that can be used to relieve pain or prevent heart attacks. aspirin is based on traditional medicines made from the willow tree. people have used these medicines for thousands of years. today, factories make aspirin by mixing salicylic acid (c₇h₆o₃) and acetic anhydride (c₄h₆o₃). when these two substances combine, they form aspirin and acetic acid (c₂h₄o₂). the aspirin is made into pills that are sold as medicine.
complete the table to classify the substances in this chemical reaction.

substance	reactant	product
acetic anhydride (c₄h₆o₃)
aspirin (c₉h₈o₄)
salicylic acid (c₇h₆o₃)

Explanation:

To solve this, we analyze the passage: Reactants are substances that combine (salicylic acid, acetic anhydride), products are formed (aspirin, acetic acid).

Substance	Reactant	Product
acetic anhydride ($\ce{C4H6O3}$)	$\blacksquare$	$\square$
aspirin ($\ce{C9H8O4}$)	$\square$	$\blacksquare$
salicylic acid ($\ce{C7H6O3}$)	$\blacksquare$	$\square$

(Note: In the table, $\blacksquare$ indicates "yes" for that category, $\square$ "no".)

of Classification:

• Reactants: Substances used to make the product (salicylic acid, acetic anhydride: "when these two combine...").
• Products: Substances formed (aspirin, acetic acid: "they form aspirin and acetic acid").

Answer:

of Classification:

• Reactants: Substances used to make the product (salicylic acid, acetic anhydride: "when these two combine...").
• Products: Substances formed (aspirin, acetic acid: "they form aspirin and acetic acid").