Which one of the following aqueous solutions will be basic ?
Correct answer: C. Na2CO3
- A. NaCI
- B. Na2SO4
- C. Na2CO3
- D. FeCl3
Explanation
Na2CO3 gives CO3^2− ions, which react with water to produce OH− ions, making the solution basic. A student may choose Na2SO4 by assuming every soluble salt is neutral, although carbonate hydrolysis is the important factor here.
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About Solubility Product
The solubility product constant, Ksp, represents the equilibrium concentrations of ions from a sparingly soluble salt, each raised to its stoichiometric power. Problems involve writing Ksp expressions, calculating molar solubility, applying the common-ion effect and predicting precipitation from the ionic product.
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