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Chemistry

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Use the equation below to answer the following questions.


Al + H2SO4 ==> Al2(SO4)3 + H2


A. If 8.15 moles of aluminum are reacted, how many moles of hydrogen will be produced?


B. If 44.7 g of hydrogen sulfate is reacted, what mass of aluminum sulfate is produced?


C. If 34.6 g of hydrogen sulfate is reacted, how many moles of aluminum is also reacted?


D. What mass of aluminum is needed to produce 0.321 moles of hydrogen?

  • Chemistry - ,

    You need to balance the equation.
    2Al + 3H2SO4 ==> Al2(SO4)3 + 3H2

    Now use the coefficients to convert mols Al to mols H2.
    mols H2 = mols Al x (3 mols H2/2 mols Al) = ??
    Note how the mols Al cancel to leave mols H2. That is how you know if the conversion factor you are using is the right one (instead of using 2 mols Al/3 mols H2.

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