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, B-B2+, C-C2+, D-D2+. the results of the experiments were:

D2 + C = No reactions
B2 + C = B + C2
A + B = A + B2

a) write the equation for each reduction half reaction.

b) Arrange them in the relative reduction potential table with the easiest to reduce at the top and the hardest at the bottom.

c) write the equation for each ocidation half reaction.

d) Arrange them in the relative oxidation potential table with the easiest to oxidixe at the top and the hardest at the bottom.

e) Which is the best oxidixing agent? which is the best reducing agent??

  1. 👍 0
  2. 👎 0
  3. 👁 53
asked by Laura
  1. I think you have made typos or just didn't write some of the problem?
    Is A-A really A-A^+ or A-A^2+ or something similar to the other pairs?
    In the reactions, is the first one of
    D2 + C==>NR really D^2+ + C ==> NR?
    Is the second one of
    B2 + C ==> B + C2 really B^2+ + C ==>B + C^2+?
    etc.

    1. 👍 0
    2. 👎 0
  2. A-A^+
    D^2+ + C = No Reactions
    B^2+ + C = B C^2
    A^+ + B = A + B^2+

    1. 👍 0
    2. 👎 0
    posted by Laura
  3. Arrange these couples in pairs something like the following where the first column is the metal(element) and the second column is the ion:
    .....M.......ion
    .....A.......A^+
    .....B.......B^2+
    .....C.......C^2+
    .....D.......D^2+

    Now remember the activity series. Here is a link to remind you of what it looks like.
    http://www.files.chem.vt.edu/RVGS/ACT/notes/activity_series.html
    In the activity series, any ELEMENT will replace any ION BELOW IT IN THE SERIES but will NOT replace an ion ABOVE it in the series. For example,
    2Na + HCl ==> 2NaCl + H2. Notice that Na is ABOVE H^+ so the reaction goes as written. But Cu will not replace H^+ as
    Cu + 2HCl ==> CuCl2 + H2 IS NOT CORRECT. WHY? Because Cu is BELOW H^+ in the series (find them so you can see what is going on) so the correct equation to write is
    Cu + HCl ==> No reaction.
    Now to your post.
    D^2+ + C ==> No reaction which means that C (the element) is BELOW D^2+; therefore, in a new table you can write them like this.
    .........M..............ion
    .........D..............D^2+
    .........C..............C^2+

    From rxn 2 (B^2+ + C==> B + C^2+) you know C(the element) must be ABOVE B and you can add it to the table just below C like this.
    .........M..............ion
    .........D..............D^2+
    .........C..............C^2+
    .........B..............B^2+

    The last equation of A^+ + B ==> A + B^2+ means B must be ABOVE A so it goes at the bottom of the table. The final table should look like this
    D
    C
    B
    A.
    Now that they are lined up right, you can answer the other questions.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. principle of management

    Fernando, a manager in a retail store, is changing the work schedule of his long-term employees for the holiday season. He is using the same basic schedule as he did last year. Fernando should expect that his employees will be: A)

    asked by vedrana on March 12, 2012
  2. Principals of Management

    Fernando, a manager in a retail store, is changing the work schedule of his long-term employees for the holiday season. He is using the same basic schedule as he did last year. Fernando should expect that his employees will be: I

    asked by Melisa on May 7, 2011
  3. English- please help

    Need help with the following questions: Q1) Mrs Chen ________ for the doctor's clinic already. 1) left 2) has left 3) had left 4) was leaving Is the answer (1) or (2)? Q2) John ______ to the library since nine o'clock this

    asked by chimingbell on July 6, 2016
  4. HELP ME NOW!!!

    could you please answer my question? I need to go read my book. my mom is getting upset! i an sorry, i don't mean to be snobby but i really need help!

    asked by Morgan on February 24, 2010
  5. English

    When making multiple choice quiz for students about speaking. Do I need to use question marks in the answer choices. Example- Hello how are you. a)fine thank you and you b)good wasup c)I'm ok Answer (a) is the answer to the

    asked by Ajarn on August 17, 2012
  6. Health 8R help!!!!!!!!! (please read!)

    Dear Abby: Marijuana Dear Abby, I am very concerned about my friend Sue. She told me that she smoked weed with her older brother. First of all, what is weed? Is it legal? What are the effects? What should I do if she asks me to

    asked by Laruen on November 18, 2012
  7. QNT/351

    Describe a business situation, other than what has already been selected by fellow students or selected from the team assignment, where mean and standard deviation can be used in decision making. Describe how calculation of mean

    asked by Karen on November 26, 2013
  8. English

    So I already post a question however I forgot to write the definition of "conventional phrases" so here it is:Meaning beyond literal meaning Ex. – if a character is making his/her bed or making the bed narrow, the speaker is

    asked by Jamie on April 27, 2017
  9. English

    1. The fish I ate upset me. 2. The fish I had eaten upset me. (One more similar question, please. Are both OK? Because of the tense, #2 seems to be better. What about #1? Are both OK? Is there any difference between them?) 3.I had

    asked by rfvv on June 11, 2011
  10. Math!!!

    I have an MSA math question. What scale would you use for making a frequency table of the following data 21,79,11,9,55,38,111, and 92? Please answer it I need the question now.

    asked by Somebody on September 6, 2011
  11. social studies

    how was this phrase (our greatest glory is not in never falling,but in riseing every time we fall)in confucianism meant to the chinese This phrase means that it's not important if you fail. What's important is that you rise above

    asked by naythan on January 10, 2007

More Similar Questions