JAMB Chemistry 2008 Objective — Question 16
Question 16 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2008 Objective paper, with the correct answer and a full explanation.
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117.0g of sodium chloride was dissolved in 1.0dm3 of distilled water at 25C. Determine the solubility in mol dm3 of sodium chloride at that temperature
- A. 1.0 B
- B. 2.0Correct
- C. 3.0
- D. 4.0
Explanation
Molar mass of NaCl = 58.5gmol-1. Mole of NaCl = 117g/58.5gmol-1 = 2.0mol. Volume of water = 1.0dm3. Solubility (in moldm-3) = 2.0mol/1.0dm3 = 2.0moldm-3.
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