arranging half-cell reactions in order

Arrange the following five reduction half-cell reactions in order listing the largest positive reduction potential first and give the best oxidizing and reducing agents....

Observations:

i) A reacts spontaneously with 1 mol/L BNO3, 1 mol/L D(NO3) and dilute sulfuric acid. A does not react 1 mol/L C (NO3)

ii) B does not react spontaneously with any of the 1mol/L solutions above or with        dilute sulfuric acid.

iii) C reacts spontaneously with dilute sulfuric acid and with 1 mol/L solutions of all other metallic salts.

iv) D reacts spontaneously with 1mol/L B(NO3). It does not react with dilute sulfuric acid.

a) Use the observations and arrange the following five reduction half-cell reactions in order…the one with the largest positive reduction potential first ,and tell which is the best oxidizing and reducing agent..


                                A+2 +2e- -A (s)
                            
                            B+ + e-  B(s)
                      
                           C2+ + 2e-  C(s)

                               D2+ + 2e-  D(s)

                              2H+ + 2e-  H2 (g)

Attached file(s):

observations.doc  View File