JEE Main Chemistry question

ChemistryEquilibriumJEE Main

A(g)+B(g)⇌AB(g) is a reversible reaction. At equilibrium 0.4 mole of AB is formed when each of A and B are taken as one mole. How much of A changes into AB?

Answer: (B)

Solution

0.4/1 ×100 = 40%.

Question ID VK-136075