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Determine the concentration of a solution using the formula M1V1 + M2V2 = MV, where 1 × 25 + 0.5 × 3 = M × 5.5.

1. 0.727 M
2. 0.73 M
3. 0.018 M
4. 0.018 M

Correct answer: 0.727 M

Solution

Using the equation M1V1 + M2V2 = MV, substitute the given values: (1 × 25) + (0.5 × 3) = M × 5.5. Simplify to get 25 + 1.5 = 5.5M, which gives M = 26.5 / 5.5 = 0.727 M.

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