Which pair gives Cl 2 at room temperature-A- NaCl - Conc- H 2 SO 4B- Conc- HCl - KMnO 4C- NaCl - MnO 2D- NaCl - Conc- HNO 3

The correct option is B Conc. HCl + KMnO42KMnO4 +6 HCl → 2KCl +2MnCl2 +5Cl2 +8H2O The key idea being that the compound reacting with the chloride ion must be ...

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Standard XII

Chemistry

Potassium Permanganate

Which pair gi...

Question

Which pair gives Cl₂at room temperature ?

Conc. HCl + KMnO₄

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NaCl + Conc. H₂SO₄

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NaCl + MnO₂

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NaCl +Conc. HNO₃

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Solution

The correct option is A
Conc. HCl + KMnO₄

2KMnO₄ +6 HCl → 2KCl +2MnCl₂ +5Cl₂ +8H₂O

The key idea being that the compound reacting with the chloride ion must be a strong enough oxidising agent to change the oxidation state of chlorine from -1 to 0

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Which pair gives Cl2 at room temperature ?

The correct option is A Conc. HCl + KMnO42KMnO4 +6 HCl → 2KCl +2MnCl2 +5Cl2 +8H2O The key idea being that the compound reacting with the chloride ion must be a strong enough oxidising agent to change the oxidation state of chlorine from -1 to 0

Which pair gives Cl₂at room temperature ?

The correct option is A
Conc. HCl + KMnO₄

2KMnO₄ +6 HCl → 2KCl +2MnCl₂ +5Cl₂ +8H₂O

The key idea being that the compound reacting with the chloride ion must be a strong enough oxidising agent to change the oxidation state of chlorine from -1 to 0