A solution of Na₂CO₃ in water will have a pH greater than 7.

Question

Quizplus · Accepted Answer

The presence of a salt, in this case Na₂CO₃, in water does not always lead to a neutral pH. The salt can either be acidic, basic, or neutral depending on the nature of its cation (Na+) and anion (₂CO₃). In this case, Na₂CO₃ is a basic salt because its anion, CO₃, is the conjugate base of a weak acid (H2SO3). Therefore, when dissolved in water, the solution will have a pH greater than 7.

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A Solution of Na₂CO₃ in Water Will Have a PH