Identify the longest C–C bond(s) in the following compound?

For the structure shown in the box below identify two corresponding correct resonance structures.

Identify the conjugate acid of the compound shown in the box below.

Which atomic orbitals overlap to form the carbon-carbon σ and π bonding molecular orbitals of ethene, H2C=CH2  ,respectively?

Which compound contains the most polar bond? 

Identify the two compounds that are not constitutional isomers having the molecular formula C4H8O.

Bonus question For the following reaction identify the acid and the base and predict the position of the equilibrium.

Rank the following compounds in order of decreasing strength of intermolecular forces.

Which of the following violates the rules for curved arrows? 

For the following acid-base reaction, predict which side of the equilibrium is favored.