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In a reaction A+B(2) rarr AB(2) Iden...

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`

Text Solution

Verified by Experts

According to the equation,
1 mole of A reacts with 1 mole of `B_(2)` and 1 atom of A reacts with 1 molecule of `B_(2)` and 1 atom of A reacts with 1 molecule of `B_(2)`
(i) B is limiting reagent because 200 molecules of `B_2` will react with 200 atoms of A and 100 atoms of A will be left in excess.
(ii) A is limiting reagent because 2 mole of A will react with 2 mol ofB and 1 mol ofB will be left in excess.
(iii) Both will react completely because it is stoichiometric mixture. No limiting reagent.
(iv) 2.5 mol of B will react with 2.5 mol of A and hence B is limiting reageht.
(v) 2.5 mol of A will react with 2.5 mol of B
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