Multiple choice

If 250 ml of 0.25 M NaCl solution is diluted with water to a volume of 500 ml, the new concentration of solution is:

  1. 0.167M

  2. 0.0167M

  3. 0.125M

  4. 0.0833M
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Using M1V1 = M2V2: 0.25 * 250 = M2 * 500. M2 = (0.25 * 250) / 500 = 0.25 / 2 = 0.125M.

AI explanation

Using the dilution formula M1 times V1 equals M2 times V2, you can set up the equation 0.25 M multiplied by 250 mL equals the new molarity M2 multiplied by 500 mL. Solving for M2 gives 62.5 divided by 500, which equals 0.125 M.

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