Question

X2 + Y2 → 2 XY If 20 moles of X and 10 moles of Y are taken, the limiting reagent will be

Answer 1

y is the limiting reagent

Step - by - step Explaination: Simple trick to identify the limiting reagent is divide given number of Moles in question by number of moles participating in reaction.

♦ Number of moles of X given in question is 20 moles while in reaction is 1 mole.

♦ Number of moles of Y given in question is 10 moles while in reaction is 1 mole.

→ 20/1 = x = 20, 10/1 = y = 10

Which one of the value is less?

Since the value of y is less which 10 (10 < 20) hence the substance y will finish in reaction first in comparison to x. Hence y is the limiting reagent.