Which of the following is mixed salt?
Correct answer: B. NaKCO₃
- A. Na₂SO₄
- B. NaKCO₃
- C. CaCl2
- D. NaCl
Explanation
A mixed salt is one that contains more than one type of cation or anion. In the given options, NaKCO₃ contains both sodium (Na⁺) and potassium (K⁺) cations, making it a mixed salt. In contrast, Na₂SO₄, CaCl2, and NaCl are normal salts, each containing only one type of cation and one type of anion, hence they are not mixed salts.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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