Which of the following salts can be melted without decomposition?

Assessment: JAMB UTME - Chemistry - 1991 Subject: Chemistry

Question 1 Report

Which of the following salts can be melted without decomposition?
Answer Details
The salt that can be melted without decomposition is sodium carbonate (Na2CO3). This is because sodium carbonate has a high melting point and does not decompose at its melting point. On the other hand, calcium carbonate (CaCO3), magnesium carbonate (MgCO3), and zinc carbonate (ZnCO3) decompose upon melting due to the release of carbon dioxide (CO2) gas. Therefore, these salts cannot be melted without decomposition.
Read lesson note on Acids, Bases And Salts (Ghana Only) (WAEC)
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