Look at the following hypothetical reaction: A + 4B - C + 3D. Assume that the equation is balanced. Which of the following mole ratios will produce the most product?

a) A/B

b) A/4B

c) 3A/4B

d) 4A/B

Answer is: b) A/4B.

Chemical reaction: A + 4B → C + 3D.

from chemical reaction: n (A) : n (B) = 1 : 4.

a) if 1A reacts with 1B, there is not enough B (need 3B more).

c) if 3A react with 4B, there is not enough B (need 8B more).

d) if 4A react with 1B, there is not enough B (need 15B more).