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Which of the following forms metal oxide on heating A) Na2CO3 B) Li2CO3 C) K2SO4 D) NaHCO3?
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Which of the following forms metal oxide on heating A) Na2CO3 B) Li2CO...
**Metal Oxide Formation on Heating**

Metal oxides are compounds formed by the reaction of a metal with oxygen. When certain metal compounds are heated, they undergo decomposition and form metal oxides. Among the given options, the metal compounds that form metal oxide on heating are:

**A) Na2CO3 - Sodium Carbonate**
When sodium carbonate (Na2CO3) is heated, it undergoes thermal decomposition to form sodium oxide (Na2O) and carbon dioxide (CO2). The reaction is as follows:
2 Na2CO3(s) → Na2O(s) + 3 CO2(g)

**B) Li2CO3 - Lithium Carbonate**
Lithium carbonate (Li2CO3) also undergoes thermal decomposition when heated to form lithium oxide (Li2O) and carbon dioxide (CO2). The reaction is as follows:
Li2CO3(s) → Li2O(s) + CO2(g)

**C) K2SO4 - Potassium Sulfate**
Potassium sulfate (K2SO4) does not directly form a metal oxide when heated. Instead, it undergoes thermal decomposition to form potassium pyrosulfate (K2S2O7) and sulfur trioxide (SO3). The reaction is as follows:
2 K2SO4(s) → K2S2O7(s) + SO3(g)

**D) NaHCO3 - Sodium Bicarbonate**
Sodium bicarbonate (NaHCO3), commonly known as baking soda, decomposes when heated to form sodium carbonate (Na2CO3), water (H2O), and carbon dioxide (CO2). The reaction is as follows:
2 NaHCO3(s) → Na2CO3(s) + H2O(g) + CO2(g)

Therefore, options A (Na2CO3), B (Li2CO3), and D (NaHCO3) form metal oxide on heating, while option C (K2SO4) forms potassium pyrosulfate instead.
Community Answer
Which of the following forms metal oxide on heating A) Na2CO3 B) Li2CO...
Li2CO3.
bcz in IA. only Li carbonates gives oxise on heating.
and also bicarbonate gives carbonates on heating.
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Which of the following forms metal oxide on heating A) Na2CO3 B) Li2CO3 C) K2SO4 D) NaHCO3?
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