Which ion is present in the highest concentration in a 2 mole/cm3 solution of sodium sulfate?
Correct answer: C. The sodium ion, Na+ (aq)
- A. The hydrogen ion, H+
- B. The hydroxide ion, OH-
- C. The sodium ion, Na+ (aq)
- D. The sulphate ion, SO4-2 (aq).
Explanation
.Na+ ions will be present in the highest concentration since there are 2 moles of Na+ in each mole of Na2SO4, so the concentration of Na+ is 4 moles/cm3. Therefore, C is the correct answer.
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