mccord ch305 mccord ch305

Odds/Ends


Odds and Ends Relating to Class



I balanced this in class on Tuesday, 2/18

Balance the following all aqueous redox reaction in acid:

MnO4–   +   Fe2+   →   Mn2+   +   Fe3+

Now, sum the coefficients on each side of the arrow (reactants and product sides). Which of the following is the right set of sums and the number of electrons transferred?

  1. 10 → 6 , 6e–
  2. 10 → 10 , 3e–
  3. 14 → 10 , 5e–
  1. 6 → 10 , 5e–
  2. 14 → 8 , 3e–
  3. 8 → 14 , 5e–

I balanced this in class on Tuesday, 2/18

Consider the following rather planetary and radioactive redox reaction:

Pu   +   NpO3+   →   PuO2   +   NpO22+

Use the smallest possible integer coefficients to balance the reaction in acidic aqueous solution. What is the coefficient for H2O and which side of the equation is it on?

  1. 2, left
  2. 2, right
  3. 4, left
  4. 5, left
  1. 4, right
  2. 3, left
  3. 5, right
  4. 3, right