Question

For this set of questions, you will only have ONE SUBMISSION. You will need to draw the Lewis structures if they are not given.

Which molecule contains the longer C O bond?

CO₂CO     

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My Notes

Question Part

ONE SUBMISSION. Which molecule contains the shorter O O bond?

H₂O₂ (one H on each O)O₃     

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My NotesONE SUBMISSION. Which molecule contains the stronger C C bond?

C₂H₄ (two H on each C)C₂H₂ (one H on each C)     

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My NotesONE SUBMISSION. Which ion has the larger N O bond order?

NO₂^1-NO₃^1-     

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My NotesONE SUBMISSION. Which ion contains the weaker N O bond?

NO₃^1-NO₂^1-     

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Rank the following three samples from least to greatest in mass. Your response should be a three letter "word" made up of the letters a, b and c. If you think sample a has the least mass and c has the greatest mass, then you would enter abc in the answer box.
a) one mole of C₂H₄
b) one mole of HF
c) one mole of O₂

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Rank the following three samples from least to greatest in mass. Your response should be a three letter "word" made up of the letters a, b and c. If you think sample a has the least mass and c has the greatest mass, then you would enter abc in the answer box.
a) one mole of NF₃
b) one mole of CH₂Cl₂
c) one mole of Ca(OH)₂

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Rank the following three samples from least to greatest in number of molecules. Your response should be a three letter "word" made up of the letters a, b and c. If you think sample a has the least number of molecules and c has the greatest number of molecules, then you would enter abc in the answer box.
a) one mole of C₁₀H₂₂
b) two moles of C₂H₆
c) three moles of PCl₅

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Rank the following three samples from least to greatest in number of atoms. Your response should be a three letter "word" made up of the letters a, b and c. If you think sample a has the least number of atoms and c has the greatest number of atoms, then you would enter abc in the answer box.
a) one mole of C₁₀H₂₂
b) one mole of C₂H₆
c) one mole of PCl₅

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My Notes

Question Part

Rank the following three samples from least to greatest in number of atoms. Your response should be a three letter "word" made up of the letters a, b and c. If you think sample a has the least number of atoms and c has the greatest number of atoms, then you would enter abc in the answer box.
a) one mole of C₃H₈
b) one mole of C₆H₆
c) one mole of C₂H₆O

Answer 1

1) the length of single bond is more then double and triple bond

Bond length order:

Single bond> double bond > triple bond

CO2 contains double bond while CO contain triple so CO2 will have longer bond

2) o3 will have shorter bond length

3) order of strength

Triple bond > double bond > single bond

C2H2 will have stronger bond as it contain triple bond

4) bond order of NO2- = 3 electrons / 2 bonding group = 1.5

NO3- = 4 electrons / 3 bonding group = 1.33

Hence NO2 - wil have more bond order