Bonus question Which of the indicated protons would be most acidic?

Bonus question Which of the following compounds is most acidic?

For the following reaction, respectively identify the Brønsted-Lowry acid and the conjugate acid.

Which of the following correctly matches the molecules to the names of the functional group?I.          CH3OH                    Carboxylic acidII.         CH3CO2CH3               EsterIII.        CH3COCH3                 KetoneIV.        H2CO                      Alcohol

What are the formal charges on the atoms indicated for the following structure?

The sigma bond that is part of C=N in the following compound results from the overlap of which orbitals? 

What is the correct Lewis structure for the molecule shown in the box below?

Bonus question For the following reaction identify the acid and the base and predict the products.

What is the order of decreasing bond length for a C-C bond composed of the following molecular orbitals? 

For the following reaction, respectively identify the Brønsted-Lowry acid and the conjugate base.