JAMB Chemistry 2013 Objective — Question 18
Question 18 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2013 Objective paper, with the correct answer and a full explanation.
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10.0dm³ of water added to 2.0dm³ of 2.5dm³ solution of HCl. What is the concentration of the final solution in moldm⁻³?
- A. 2.0
- B. 0.5
- C. 0.4Correct
- D. 8.0
Explanation
C₁=2moldm⁻³, V₁=2.5dm³, V₂=10dm³+2.5dm³=12.5dm³. Using C₁V₁=C₂V₂: C₂ = (2×2.5)/12.5 = 0.4moldm⁻³.
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