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15 August, 04:14

What mass of water will be produced from 2.70 moles of Ca (OH) 2 reacting with HCI

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Answers (1)
  1. 15 August, 04:35
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    97.2g

    Explanation:

    Step 1:

    We'll begin by writing the balanced equation for the reaction. This is illustrated below:

    Ca (OH) 2 + 2HCl - > CaCl2 + 2H2O

    Step 2:

    Determination of the number of mole of water (H2O) to produce from the reaction.

    This is illustrated below:

    From the balanced equation above,

    1 mole of Ca (OH) 2 produced 2 moles of H2O.

    Therefore, 2.70moles of Ca (OH) 2 will produce = 2.7 x 2 = 5.4 moles of H2O.

    Step 3:

    Converting 5.4 moles of H2O to grams. This is illustrated below:

    Number of mole of H2O = 5.4 moles

    Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

    Mass of H2O = ?

    Mass = number of mole x molar Mass

    Mass of H2O = 5.4 x 18

    Mass of H2O = 97.2g

    Therefore, 97.2g of water is produced from the reaction.
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