What is the final concentration if 100 mL of water is added to 25.0 mL of 6.0 M NaCl?

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2 Answers

  • C1V1 = C2V2

    That is – concentration times volume is always a constant ratio.

    So, (6.0 M)(25 ml) = (Final Concentration)(125 ml).

    Solve for Final Concentration by dividing both sides by 125 ml and you get that the Final Concentration is 1.2 M.

    Source(s): Personal Knowledge
  • Figure out how many moles there are in the original solution (0.025L)*(6mol/L). The liters cancel out and you have moles. Divide the number of moles by 0.125L (the new volume of the solution) to find the molarity.

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