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Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO2 and gaseous product. MnO2 reacts with NaCl and concentrated H2SO4 to give a pungent gas Z. X, Y and Z, respectively, are: (1) KMnO4, K2MnO4 and Cl2 (2) K2MnO4, KMnO4 and SO2 (3) K3MnO4, K2MnO4 and Cl2 (4) K2MnO4, KMnO4 and Cl2

1. KMnO4, K2MnO4 and Cl2
2. K2MnO4, KMnO4 and SO2
3. K3MnO4, K2MnO4 and Cl2
4. K2MnO4, KMnO4 and Cl2

Correct answer: KMnO4, K2MnO4 and Cl2

Solution

The correct option identifies KMnO4 as the starting compound that decomposes to form K2MnO4 and MnO2, while the reaction of MnO2 with NaCl and concentrated H2SO4 produces Cl2, a pungent gas. This sequence of reactions aligns perfectly with the properties and behaviors of the manganese compounds involved.

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