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In a reaction `A+B_(2) rarr AB_(2)` Identify the limiting reagent, if any, in the following reaction mixtures. a. `300 "atoms"` of `A+ 200` molecules of `B` b. `2 mol A+3 mol B` c. `100 "atoms"` of `A+100` molecules of `B` d. `5 mol A+2.5 mol B` e. `2.5 mol A + 5 mol B` |
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Answer» According to the given reaction, `1` atom of A reacts with `1` molecule of `B`. `:. 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. b. According to the given reaction, `1` mole of `A` mol of `A` reacts with `1 mol` of B `:. 2 mol` of `A` will react with `2 mol` of `B`. Hence, `A` is the limting reactant. c. No limiting reagent. d. `2.5 mol` of `B` will react with `2.5 mol` of `A`. Hence, `B` is the limiting reagent. e. `2.5 mol` of `A` will react with `2.5 mol` of `B` Hence, `A` is the limiting reagent. |
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