mole 4dMOLE 4DINFORMATION TECHNOLOGY This qualification reflects the role of individuals in a variety of information and communications technology (ICT) roles who have established2A+4B 3C+4D. 5 6. Limiting reactant is declared which have lowest ratio of . coefficient. Moles. for reactant. For A: 2. 5 =2.5. For B: 4. 6 =1.5. ⇒B is limiting reagent.