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the balanced reaction in acidic medium is I2 + H2S ---> 2I-+S+2H+.  Should I place (s) in S?  For instance, I2 + H2S ---> 2I-+S (s) +2H+.   Which is the correct answer?

the balanced reaction in acidic medium is I2 + H2S ---> 2I-+S+2H+.  Should I place (s) in S?  For instance, I2 + H2S ---> 2I-+S (s) +2H+.   Which is the correct answer?

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Good day! I have a question regarding redox reaction balancing! Do I still need to include the (s), (l), (g), (aq) in my final balanced equation?  I will attach the picture of the example here.

  In letter b, the balanced reaction in acidic medium is I2 + H2S ---> 2I-+S+2H+. 

Should I place (s) in S? 

For instance, I2 + H2S ---> 2I-+S (s) +2H+.  

Which is the correct answer?

个 Step 3 (b). Balanced oxidation-half is: H₂S- ----> S + 2H+ + 2e¯ Balanced reduction-half is: 1₂ +2e --> 21¯ Add both the equations. So, Balanced reaction in acidic medium is : 12 + H₂S --> 21¯ + S + 2H+ Oxidizing agent is the agent which undergoes reduction. Therefore, oxidizing agent = 1₂ Reducing agent is the agent which undergoes oxidation. Therefore, reducing agent = H₂S
Transcribed Image Text:个 Step 3 (b). Balanced oxidation-half is: H₂S- ----> S + 2H+ + 2e¯ Balanced reduction-half is: 1₂ +2e --> 21¯ Add both the equations. So, Balanced reaction in acidic medium is : 12 + H₂S --> 21¯ + S + 2H+ Oxidizing agent is the agent which undergoes reduction. Therefore, oxidizing agent = 1₂ Reducing agent is the agent which undergoes oxidation. Therefore, reducing agent = H₂S
2+ (a) MnO4 + VO²+ → Mn²+ + V(OH)4 (b) I₂ + H₂S(g) → I¯¯ +S(s) 2+ (c) Cr₂O7²- + U4+ → Cr³+ + UO₂²+ (d) Cl + MnO₂ (s) → Cl₂(g) + Mn² (e) IO3 + I→→ 1₂(aq) (f) IO3 + I + Cl¯ → IC¹₂ (g) HPO3²- + MnO4 + OH → PO³+ MnO2- Write balanced redox equations for the following reactions. Show the full balancing process and supply H+ and/or H2O as needed to obtain balance. Item g is balanced in basic medium while the rest are in acidic medium. Identify the oxidizing agent and the reducing agent on the left side of each equation in the previous problem.
Transcribed Image Text:2+ (a) MnO4 + VO²+ → Mn²+ + V(OH)4 (b) I₂ + H₂S(g) → I¯¯ +S(s) 2+ (c) Cr₂O7²- + U4+ → Cr³+ + UO₂²+ (d) Cl + MnO₂ (s) → Cl₂(g) + Mn² (e) IO3 + I→→ 1₂(aq) (f) IO3 + I + Cl¯ → IC¹₂ (g) HPO3²- + MnO4 + OH → PO³+ MnO2- Write balanced redox equations for the following reactions. Show the full balancing process and supply H+ and/or H2O as needed to obtain balance. Item g is balanced in basic medium while the rest are in acidic medium. Identify the oxidizing agent and the reducing agent on the left side of each equation in the previous problem.
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