In a reaction A +B_(2) rarr AB_(2) identify the limiting reagent, if any, in the following reaction mixture. (i) 300 atoms of A + 200 molecules of B (ii) 2 mol A + 3 mol B (iii) 100 atoms of A + 100 molecules of B (iv) 5 mol A + 2.5 mol A (v) 2.5 mol A + 5 mol B

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

1.	In a reaction A +B_(2) rarr AB_(2) identify the limiting reagent, if any, in the following reaction mixture. (i) 300 atoms of A + 200 molecules of B (ii) 2 mol A + 3 mol B (iii) 100 atoms of A + 100 molecules of B (iv) 5 mol A + 2.5 mol A (v) 2.5 mol A + 5 mol B
Answer» Solution :Reaction `A + B_(2) rarr AB_(2)` (i) Accroding to above reaction, ONE atom of A react with one molecules of B. So, 200 ATOMS of a react with 200 molecules of B. So, B is a limiting reagent and A is excess reagent is remain. (II) According of above, one mole of A react with one mole of B. So, 2 mol of A react with 2 mole of B. So, A is limiting reagent. (iii) No lomiting reagent. (iv) 2.5 mol of B is consumed to react with 2.5 mol of A atom. So, B is limiting reagent. (v) 2.5 mol of A is consumed to react with 2.5 mol of B atom. So, A is limiting reagent.