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Which of the following salt solutions will have a pH greater than 7?

Chemistry
WAEC 2001

Which of the following salt solutions will have a pH greater than 7?

  • A. NaCl(aq)
  • B. Na2CO3(aq)
  • C. Na2SO4(aq)
  • D. NaHSO4(aq)
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Correct Answer: Option B
Explanation

The pH of a solution of sodium carbonate is greater than 7 because it's a basic salt. When Na2CO3 is dissolved in water, it undergoes hydrolysis, which produces OH- ions, making the solution pH greater than 7.

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