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Limiting reagent, percent yield and percent excess
NEET level
Single correct option
Difficulty 1 of 3
mc184
28
g
of
N
X
2
reacts with
10
g
of
H
X
2
according to
N
X
2
+
3
H
X
2
2
NH
X
3
. The maximum mass of
NH
X
3
formed is (N = 14, H = 1)
A
56.7
g
B
17
g
C
34
g
D
68
g
Answer: C
n(N2) = 1.00 mol; n(H2) = 5.0 mol. N2 needs only 3 mol H2, so N2 is limiting. NH3 = 2 x 1 = 2 mol = 34 g.
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