CBSE Class 11-science Answered
2A2 + 3B2 → 2C2 + D2
If 6 mol of A2 reacts with 7.5 mol of B2, then.
(a)4 mol of C2 is formed
(b)3 mol of D2 is formed
(c)0.5 mol of B2 is left in excess
(d)1 mol of A is left in excess
Asked by saankhytare01539 | 22 May, 2023, 12:46: PM
Expert Answer
Dear Student,
2A2 + 3B2 → 2C2 + D2
6 7.5
Limiting reactant is the reactant which have lowest ratio of moles/coefficient for reactant.
A2 = 6/2 = 3
B2 = 7.5/3 = 2.5
Hence, B2 is limiting reactant.
3 moles of B2 require 2 moles of A2.
7.5 moles of B2 require 5 moles of A2.
If 2 mole A2 give 2 moles of C2, then 5 moles of A2 give 5 moles of C2.
If 2 moles of A2 give 1 mole if D2, then 5 moles of A2 give 2.5 moles of D2.
Hence, the correct answer option is (d) 1 mol of A is left in excess.
Answered by | 22 May, 2023, 03:17: PM
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