# Chemistry

Balance the following redox (oxidation-reduction) reaction under basic conditions. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.)
CrO42−(aq) + S2O32−(aq) → Cr3+(aq) + SO42−(aq)

1. 👍 0
2. 👎 0
3. 👁 751
1. Here us a site that tells you the details.
http://www.chemteam.info/Redox/Redox.html

I don't do them that way. Here is how I do the CrO4^-. You can add the states.
CrO4^2- ==> Cr^3+

Cr is +6 on left and +3 on right. Add 3e to left.
CrO4^2- +3e ==> Cr^3+

Count the charge on the left (-5) and right (+3); add OH^- to the right to balance the charge.
CrO4^2- + 3e ==> Cr^3+ + 8OH^-

Now add H2O to balance.
CrO4^2- + 4H2O + 3e ==> Cr^3+ + 8OH^-

1. 👍 0
2. 👎 1

## Similar Questions

1. ### science, chemistry

Separate this redox reaction into its component half-reactions. O2+2Cu---->2CuO thought it was: Oxidation 2e-+O2---->2O(-2) Reduction Cu---->Cu(2+)-2e- but this is wrong

2. ### Chemistry

Write a balanced equation for the reaction that occurs in each of the following cases. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) I think have the reactions, but I'm

3. ### chemistry

Balance following oxidation reduction reactions using oxidation states method? a) Cl2(g) + Al(s) --> Al3+(aq) + Cl- b.) O2(g) + H2O(l) + Pb(s) --> Pb(OH)2(s) c) H+(aq) + MnO4-(aq) + Fe2+(aq) --> Mn2+(aq) + Fe3+(aq) + H2O(l)

4. ### Chem 1

Use oxidation states to identify the element that is being oxidized in the following redox reaction: Cu(s)+2 H 2 S O 4 (aq) → CuS O 4 (aq)+S O 2 (g)+2 H 2 O(l)

1. ### chem

Q: Calculate ℰ° values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the equations. Standard reduction potentials are found in the Standard Reduction Potentials table.

2. ### Chemistry

For a particular redox reaction NO2– is oxidized to NO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in basic solution. Phases are optional.

3. ### Chemistry

Consider a generic redox reaction then suppose that the coefficients in the redox reaction are doubled. How will the following quantities be affected for a voltaic cell under nonstandard conditions, will they be Doubled, Halved,

4. ### Chemistry

Complete and balance the equation for this reaction in basic solution? Redox reaction Cr is oxidized to CrO42– and Fe3 is reduced to Fe2...? For a particular redox reaction Cr is oxidized to CrO42– and Fe3 is reduced to Fe2 .

1. ### chemistry- electrochemical cell

What makes this an oxidation-reaction? 3Ag2S+2Al(s) -> Al2S3+6 Ag(s)? Write the half-reactions showing the oxidation and reduction reactions. Identify which is the oxidation reaction and which is the reduction reason. What is

2. ### Chemistry

Balance the following redox reaction in basic solution. H2(g)+Fe3+(aq) ---> H2O(l)+Fe2+(aq)

3. ### Chemistry

Which of the following is an oxidation-reduction (redox) reaction? A. 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g) B. 2NaN3(g) → 2Na(g) + 3N2(g) C. 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) D. Fe(s) + Ni(NO3)2(aq) → Fe(NO3)2(aq) + Ni(s)

4. ### chem

A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge