Chemistry

posted by .

The following equations are intepretations of the evidence from the reactions of four metals with various cation solutions. Make a table of half-reactions and arrange the four metallic ions and the hydrogen ions in order of their decreasing tendency to react. Label the strongest oxidizing agent and reducing agent.

Cd + 2H+ --> Cd2+ + H2
Hg + 2H+ --> Hg2+ + H2
Be + Cd2+ --> Be2+ + Cd
Ca2+ + Be --> Ca + Be

So I identified Cd, Hg, Be as the reducing agents and 2H+, Cd2+, Ca2+ as the oxidizing agents.

Now when making the table I can't identify which ones are the strongest and weakest. I know the method to do it. But for this question I don't know in what order they go. Can anyone help me?

  • Chemistry -

    Alex, I'm sorry but I can't help you with this. First, I don't think Hg will displace H ion to produce H2. Second, I don't see anyway of resolving if Cd is above or below Hg even if I believed that Hg would displace H. I don't believe in making up problems in which the data is not true. Are you allowed to use any other information, such as that which you posted last night (similar problem)? That might help, I don't know. From these data, you CAN say that Be is above Ca and that Be is above Cd ; also that Cd and Hg are above H, but there is no way I can see to place these two groups together.

  • Chemistry -

    OH! I just realized that Ca2+ + Be and Hg + 2H+ are actually nonspontaneous reactions.

  • Chemistry -

    Thanks for letting me know. That sure makes the problem go from impossible to a two second problem.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chem

    The following equations represent spontaneous reactions. From this evidence, set up a table of relative strengths of oxidizing and reducing agents. Write half-reaction equations and label the strongest oxidizing agent and reducing …
  2. chemistry

    Lab: Creating a Redox Table Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will see how more extensive tables of relative strengths …
  3. chemistry

    Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will see how more extensive tables of relative strengths of oxidizing and reducing …
  4. chemistry

    Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble. Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. …
  5. chemistry

    Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble. Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. …
  6. chemistry

    Reaction 1: I2(aq)Cu^+2(aq) Ag^+(aq)Br2(aq) Column 1---Column 2---Column 3---Column 4---Column 5 I-(aq)---X---X---T---T Cu(s)---T---X---T---T Ag(s)---X---X---X---T Br-(aq)---X---X---X---X Reaction of metals and solution of ions Reaction …
  7. Chemistry

    From the Standard Potential Table in your general chemistry textbook: Half-reactions are written as _________ reactions with charge and mass balanced. Among the ions, Cd2+Pb2+ & Ca2+ ,__________ has the greatest ability to reduce to …
  8. Chemistry, electrochem

    (1) Half-reactions are written as ______ reactions with charge and mass balanced. (2) Among the ions, Cd^2+, Pb^2+ & Ca^2+, ________ has the greatest ability to reduce to its neutral metal. (3) Among the neutral metals; Pb, Ca & Cd, …
  9. Chemistry

    I am not sure about this question I tried a) but am very confused with b. Experiments were preformed with four metals and solutions of their ions: A- A+, B-B2+, C-C2+, D-D2+. The results of the experiment were: D2+ + C --> No reaction …
  10. Chemistry

    This question is really making me upset i just can't get the answer right. i've tried so many times. If someone could help it would be muchly appeciated! Experiments were performed with four metals and solutions of their ions: A-A, …

More Similar Questions