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13 July, 22:45

Calculate the molarity of a solution containing 25.0 moles of ethanol (C₂H₅OH) in enough water to make 3.5 liters of solution?

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  1. 13 July, 23:57
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    Answer: 7.14mol/dm3

    Explanation:

    Molarity is calculated by dividing the amount of a substance in volume of the solution.

    i. e Molarity = (Amount in moles/volume in liters or dm3)

    Given that:

    Amount of moles = 25.0 moles

    Volume = 3.5 liters of solution

    Recall that 1 liter = 1dm3

    so, 3.5 liters = 3.5dm3

    Molarity = (25.0moles/3.5dm3)

    = 7.14mol/dm3

    Thus, the molarity of the solution is 7.14mol/dm3
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