Consider the hypothetical chemical reaction represented by the equation 3 A + 2 B → A₃B₂ Which of the following is a correct interpretation of this equation?
i.3 grams of A react with 2 grams of B to form 1 gram of A₃B₂
ii.3 atoms of A react with 2 atoms of B to form 1 molecule of A₃B₂
iii.3 moles of A react with 2 moles of B to form 1 mole of A₃B₂

Question

Quizplus · Accepted Answer

The equation represents a stoichiometric relationship. It shows that 3 atoms of A react with 2 atoms of B to form 1 molecule of A₃B₂ (ii), and similarly, 3 moles of A react with 2 moles of B to form 1 mole of A₃B₂ (iii). The equation does not imply a relationship in grams (i) because the masses of the substances are not necessarily equal.

Consider the Hypothetical Chemical Reaction Represented by the Equation 3