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27 April, 00:09

How many grams of CuCl are produced from 78.9g of HCl?

2CuCl + H2S - -> Cu2S + 2HCl

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  1. 27 April, 00:12
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    The mass of CuCl is 214.2 grams

    Explanation:

    Step 1: Data given

    Mass of HCl = 78.9 grams

    Molar mass HCl = 36.46 g/mol

    Molar mass of CuCl = 99.0 g/mol

    Step 2: The balanced equation

    2CuCl + H2S → Cu2S + 2HCl

    Step 3: Calculate moles HCl

    Moles HCl = mass HCl / molar mass HCl

    Moles HCl = 78.9 grams / 36.46 g/mol

    Moles HCl = 2.164 moles

    Step 4: Calculate moles CuCl

    For 2 moles CuCl we need 1 mol H2S to produce 1 mol Cu2S and 2 moles HCl

    For 2.164 moles HCl we'll need 2.164 moles CuCl

    Step 5: Calculate mass CuCl

    Mass CuCl = moles CuCl * molar mass CuCl

    Mass CuCl = 2.164 moles * 99.0 g/mol

    Mass CuCl = 214.2 grams

    The mass of CuCl is 214.2 grams
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