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8 April, 22:56

Cl2 + F2 → ClF3, 5. How many moles of Cl2 are needed to react with 3.44 moles of F2? 6. How many grams of ClF3 form when 0.204 moles of F2 react with excess Cl2? 7. How many grams of ClF3 form from 130.0 grams of Cl2 when F2 is in excess? 8. How many grams of F2 are needed to react with 3.50 grams of Cl2?

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  1. 8 April, 23:01
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    5) 1.147 moles Cl2

    6) 12.57 grams ClF3

    7) 339.10 grams ClF3

    8) 5.63 grams F2

    Explanation:

    Step 1: Data given

    Number of moles F2 = 3.44 moles

    Molar mass F2 = 38.00 g/mol

    Step 2: The balanced equation

    Cl2 + 3F2 → 2ClF3

    Step 3: Calculate moles F2

    For 1 mol Cl2 we need 3 moles F2 to produce 2 moles ClF3

    For 3.44 moles F2 we'll need 3.44/3 = 1.147 moles Cl2

    Step 1: Data given

    Number of moles F2 = 0.204 moles

    Molar mass F2 = 38.00 g/mol

    Molar mass ClF3 = 92.448 g/mol

    Step 2: The balanced equation

    Cl2 + 3F2 → 2ClF3

    Step 3: Calculate moles ClF3

    For 1 mol Cl2 we need 3 moles F2 to produce 2 moles ClF3

    For 0.204 moles F2 we'll have 2/3 * 0.204 = 0.136 moles

    Step 4: Calculate mass ClF3

    Mass ClF3 = Moles ClF3 * molar mass ClF3

    Mass ClF3 = 0.136 moles * 92.448 g/mol

    Mass ClF3 = 12.57 grams ClF3

    Step 1: Data given

    Mass of Cl2 = 130.0 grams

    Molar mass F2 = 38.00 g/mol

    Molar mass ClF3 = 92.448 g/mol

    Step 2: The balanced equation

    Cl2 + 3F2 → 2ClF3

    Step 3: Calculate moles Cl2

    Moles Cl2 = mass Cl2 / molar mass Cl2

    Moles Cl2 = 130.0 grams / 70.9 g/mol

    Moles Cl2 = 1.834 moles

    Step 4: Calculate moles

    For 1 mol Cl2 we need 3 moles F2 to produce 2 moles ClF3

    For 1.834 moles Cl2 e'll have 2*1.834 = 3.668 moles ClF3

    Step 5: Calculate mass ClF3

    Mass ClF3 = Moles ClF3 * molar mass ClF3

    Mass ClF3 = 3.668 moles * 92.448 g/mol

    Mass ClF3 = 339.10 grams ClF3

    Step 1: Data given

    Mass of Cl2 = 3.50 grams

    Molar mass F2 = 38.00 g/mol

    Molar mass ClF3 = 92.448 g/mol

    Step 2: The balanced equation

    Cl2 + 3F2 → 2ClF3

    Step 3: Calculate moles Cl2

    Moles Cl2 = Mass Cl2 / molar mass Cl2

    Moles Cl2 = 3.50 grams / 70.9 g/mol

    Moles Cl2 = 0.0494 moles

    Step 4: Calculate moles F2

    For 1 mol Cl2 we need 3 moles F2

    For 0.0494 moles we need 3*0.0494 = 0.1482 moles

    Step 5: Calculate mass F2

    Mass F2 = moles F2 * molar mass F2

    Mass F2 = 0.1482 moles * 38.00 g/mol

    Mass F2 = 5.63 grams F2
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