10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl….

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Chemistry JAMB 2013

10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl. What is the concentration of the final solution in mol dm-3?

  • 0.4 checkmark
  • 8.0
  • 2.0
  • 0.5

The correct answer is: A

Explanation

C1V1 = C2V2

C2 = \(\frac{C_1V_1}{V_2}\)

= \(\frac{2.0 \times 2.5}{12.5}\)

= 0.4mol/dm-3

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