This category covers redox titrations, including how to calculate equivalent weight and normality. Learn the principles behind titration methods and apply them to analyze chemical reactions and concentrations.
In SO₃ + S → 2SO₂, SO₃ (S: +6 to +4) loses oxygen and is reduced, oxidizing S (0 to +4), no metal involved.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Let Mo = x. O = -2, Cl = -1. Equation: x + 2(-2) + 2(-1) = 0, x - 4 - 2 = 0, x = +6.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Bi (+3 in Bi₂O₃) becomes 0 in Bi. Change = 0 - (+3) = -3; each Bi gains 3 electrons.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Oxidation can involve hydrogen loss. In CH₃OH + O → HCHO + H₂O, CH₃OH loses hydrogen to form HCHO, indicating oxidation.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
S in SO₂: +4. In SO₃: x + 3(-2) = 0, x = +6, which is higher.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
S (-2 in H₂S) becomes 0 in S, losing electrons.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Oxidation can involve hydrogen loss. In 2H₂S + O₂ → 2S + 2H₂O, H₂S loses hydrogen to form S, indicating oxidation.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Let Cl = x. O = -2. Equation: 2x + 7(-2) = 0, 2x - 14 = 0, x = +7.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
NiS contains S (-2 to +4 in SO₂) losing electrons; Ni (+2 to +2) unchanged, S is oxidized.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
The reducing agent is oxidized. Na (0) becomes +1 in NaBr, reducing Br (0 to -1).
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Oxidation involves electron loss. K (0) becomes +1 in KNH₂, losing electrons, while N (-3) and H rearrange without oxidizing.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
Let C = x. H = +1, Cl = -1. Equation: x + 3(+1) + (-1) = 0, x + 3 - 1 = 0, x = -2.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
