Which choice represents a pair of resonance structures? Note that lone pairs have been omitted for clarity. View Available Hint(
s) Which choice represents a pair of resonance structures? Note that lone pairs have been omitted for clarity.
A. O=C=O and O≡C−O
B. N≡N and Br−Br
C. N≡C− and N≡C−H
D. O=N−F and N=O−F
A. O=C=O and O≡C−O
B. N≡N and Br−Br
C. N≡C− and N≡C−H
D. O=N−F and N=O−F
1 answer:
Answer:
A. O=C=O and O≡C−O
Explanation:
Resonance:
When the electron distribution on the molecule become uneven like one molecule have more electron compare to other.Resonance occurs due to overlap of the orbitals.When electron flow through pi system then resonance occurs.
So the option A is correct.
A. O=C=O and O≡C−O
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Answer:
B
Explanation:
This question is about stoichiometry. From the balanced equation ⇒
, we see that 3 moles of water is needed to react with 1 mole of
.
This means that, to fully react 3.62 moles of , we would need 3*3.62 or 10.86 moles of water. However, we only have 6.31 moles, so water is the limiting reactant.
Since 3 moles of water react with 1 mole of , 6.31 moles of water can fully react with 6.31÷3 or 2.1033 moles of
.
From the balanced equation, we see that every mole of reacted gets you 2 moles of
. Therefore, 2.1033 moles of
would give you approximately 4.21 moles of
.