Sodium carbonate is a basic salt because it is formed from a strong base (sodium hydroxide) and a weak acid (carbonic acid). Its ability to increase the concentration of hydroxide ions in solution makes it basic. Other examples of basic salts include potassium carbonate and calcium carbonate. ;
Sodium carbonate is a basic salt because it is formed from a strong base (sodium hydroxide) and a weak acid (carbonic acid). Therefore, the correct option is D: weak acid and strong base. Its ability to produce hydroxide ions in solution contributes to its basic nature.
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