{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

502Cells

# 502Cells - Example 1.a I2 H2S H I S(acidic medium 1 Write...

This preview shows pages 1–2. Sign up to view the full content.

Lesson 22 1 Lesson 22 Example 1.a: I 2 + H 2 S H + + I + S (acidic medium) 1. Write the half-reactions I 2 I I: reduction 0 1 H 2 S H + + S S: oxidation 2 0 2. Balance all atoms, except H and O I 2 2 I H 2 S H + + S 3. Balance O by adding H 2 O (not needed) 4. Balance H by adding H + I 2 2 I H 2 S 2 H + + S 5. Balance charges by adding e I 2 + 2 e 2 I H 2 S 2 H + + 2 e + S 6. Add the two half-cell equations, canceling e I 2 + 2 e 2 I H 2 S 2 H + + 2 e + S I 2 + H 2 S 2 I + 2 H + + S Lesson 22 1. Write half-reactions I I 2 I: oxidation 1 0 H 2 SO 4 SO 2 S: reduction +6 +4 2. Balance all atoms, except H and O 2 I I 2 H 2 SO 4 SO 2 3. Balance O by adding H 2 O 2 I I 2 H 2 SO 4 SO 2 + 2 H 2 O 4. Balance H by adding H + 2 I I 2 H 2 SO 4 + 2 H + SO 2 + 2 H 2 O 5. Balance charges by adding e 2 I I 2 + 2 e H 2 SO 4 + 2 H + + 2 e SO 2 + 2 H 2 O 6. Add the two half-cell equations, canceling e - 2 I I 2 + 2 e H 2 SO 4 + 2 H + + 2 e SO 2 + 2 H 2 O H 2 SO 4 + 2 H + + 2 I SO 2 + 2 H 2 O + I 2 Example 1.b: I + H 2 SO 4 I 2 + SO 2 (acidic medium) Lesson 22 Example 1.c: CuS + NO 3 Cu 2+ + SO 4 2 + NO (acidic medium) 1. Write half-reactions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}