In the reaction, A+B_(2) rarr AB_(2), identify the limiting reagent, if any, in the following mixtures {:("(i) 300 atoms of A"+"200 molecules of B","(ii) 2 mole A"+"3 mol B"),("(iii) 100 atoms of A"+"100 molecules of B","(iv) 5 mol A"+"2.5 mol B"):}

In the reaction, A+B_(2) rarr AB_(2), identify the limiting reagent, i

1.	In the reaction, A+B_(2) rarr AB_(2), identify the limiting reagent, if any, in the following mixtures {:("(i) 300 atoms of A"+"200 molecules of B","(ii) 2 mole A"+"3 mol B"),("(iii) 100 atoms of A"+"100 molecules of B","(iv) 5 mol A"+"2.5 mol B"):}
Answer» Solution :(i) According to the given reaction, 1 atom of Areacts with 1 molecule of B. `therefore` 200 molecules of B will react with 200 atoms of A and 100 atoms of A will be left unreacted. Hence, B is the limiting REAGENT while A is the excess reagent. (II) According to the given reaction, 1 mole of A react with 1 mole of B `therefore` 2 MOLES of A will react with 2 moles of B. Hence, A is the limiting REACTANT. (iii) No limiting reagent. (iv) 2.5 moles of B will react with 2.5 moles of A. Hence, B is the limiting reagent. (iv) 2.5 moles of A will react with 2.5 moles of A. Hence, B is the limiting reagent. (v) 2.5 moles of A will react with 2.5 moles of B. Hence, A is the limiting reagent.