Does the following diagram represent a chemical reaction that obeys the law of c
ID: 952062 • Letter: D
Question
Does the following diagram represent a chemical reaction that obeys the law of conservation of mass? If it does not, how should the diagram be modified to represent the reaction correctly?
No. For mass to be conserved, another white molecule (H2) is needed on the left.
No. For mass to be conserved, another white molecule (H2) is needed on the right.
No. For mass to be conserved, another blue molecule (N2) is needed on the left.
No. For mass to be conserved, another blue molecule (N2) is needed on the right.
Yes. Mass has been conserved.
A.No. For mass to be conserved, another white molecule (H2) is needed on the left.
B.No. For mass to be conserved, another white molecule (H2) is needed on the right.
C.No. For mass to be conserved, another blue molecule (N2) is needed on the left.
D.No. For mass to be conserved, another blue molecule (N2) is needed on the right.
E.Yes. Mass has been conserved.
Explanation / Answer
The balance reaction is,
N2 (g) + 3 H2 (g) -----> 2 NH3 (g)
From the given diagram there are 1 N2 molecule and 2 H2 molecule on left hand side and 2 moles of NH3 on right hand side are present.
For mass conserved ther must be another 1 molecule of H2 is present on left hand side then only H atoms will be balanced.
Answer : A
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